Tính:
\(\left(\frac{1648}{1751}+\frac{131313}{686868}\right):\left(\frac{1648}{1751}-\frac{131313}{686868}\right)\)
Những câu hỏi liên quan
tính M = (1618/1751+131313/686868):(1648/1751-131313/686868)
Tính nhanh
a) A= (3/5 + 3/7 + 3/11 - 3/37) : 4/5 + 4/7 + 4/11 - 4/37
b) B= (1648/1751 - 131313/686868) : (1648/1751 + 131313/686868)
B(1-frac{1}{21}).(1-frac{1}{36})...(1-frac{1}{1326})C(1+frac{1}{1.3}).(1+frac{1}{2.4}).(1+frac{1}{3.5})...(1+frac{1}{99.100})D(frac{810}{167}-frac{675}{225}):(frac{810}{167}+frac{675}{225})E(frac{1648}{1751}+frac{131313}{686868}):(frac{1648}{1751}-frac{131313}{686868})F(frac{1248}{1391}+frac{212121}{656565}):(frac{27}{13}.3)Ai nhanh cho full đúng ,đang cần gấp!!!!!!
Đọc tiếp
\(B=(1-\frac{1}{21}).(1-\frac{1}{36})...(1-\frac{1}{1326})\)
\(C=(1+\frac{1}{1.3}).(1+\frac{1}{2.4}).(1+\frac{1}{3.5})...(1+\frac{1}{99.100})\)
\(D=(\frac{810}{167}-\frac{675}{225}):(\frac{810}{167}+\frac{675}{225})\)
\(E=(\frac{1648}{1751}+\frac{131313}{686868}):(\frac{1648}{1751}-\frac{131313}{686868})\)
\(F=(\frac{1248}{1391}+\frac{212121}{656565}):(\frac{27}{13}.3)\)
Ai nhanh cho full đúng ,đang cần gấp!!!!!!
Tính giá trị
B=(1648/1751+131313/686868):(164816/175117+1313/6868)
Tính nhanh:
a, \(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)
b, \(\left(1998:18-1443:13\right)x\left(16996-1110:30x305\right)\)
c, \(\left(\frac{575757}{424242}+\frac{575757}{565656}+\frac{575757}{727272}\right)x18\)
A) \(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)
\(=\frac{10101\times13}{10101\times15}+\frac{10101\times13}{10101\times35}+\frac{10101\times13}{10101\times63}+\frac{10101\times13}{10101\times99}\)
\(=\frac{13}{15}+\frac{13}{35}+\frac{13}{63}+\frac{13}{99}\)
\(=13\times\left(\frac{1}{15}+\frac{1}{35}+\frac{1}{63}+\frac{1}{99}\right)\)
\(=13\times\frac{4}{33}=\frac{52}{33}\)
B) \(\left(1998:18-1443:13\right)\times\left(16996-1110:30\times305\right)\)
\(=\left(111-111\right)\times\left(16996-1110:30\times305\right)\)
\(=0\times\left(16996-1110:30\times305\right)\)
\(=0\)
( TẤT CẢ MỌI SỐ NHÂN VỚI 0 ĐỀU BẰNG 0)
C) \(\left(\frac{575757}{424242}+\frac{575757}{565656}+\frac{575757}{727272}\right)\times18\)
\(=\left(\frac{10101\times57}{10101\times42}+\frac{10101\times57}{10101\times56}+\frac{10101\times57}{10101\times72}\right)\times8\)
\(=\left(\frac{57}{42}+\frac{57}{56}+\frac{57}{72}\right)\times8\)
\(=\left(\frac{1}{42}+\frac{1}{56}+\frac{1}{72}\right)\times57\times8\)
\(=\frac{1}{169344}\times57\times8\)
\(=\frac{19}{7056}\)
MK KO BIẾT TÌNH NHANH ĐÂU! MK CHỈ LÀM ĐC NHƯ VẬY THÔI!!!!
CHÚC BN HỌC TỐT!!!!!!
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a, = 13/15 + 13/35 + 13/63 + 13/99
= 13.( 1/15 + 1/35 + 1/63 + 1/99 )
= 13.( 1/ 3.5 + 1/5.7 + 1/7.9 + 1/ 9.11)
= 13 . ( 1/3 - 1/5 +1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11)
= 13 . ( 1/3 - 1/11)
= 13 . 3/11 = 39/11
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tính nhanh : B = 70 . \(\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(B=70.\left(\frac{13}{56}+\frac{13}{72}+\frac{13}{90}\right)\)
\(B=70.13.\left(\frac{1}{56}+\frac{1}{72}+\frac{1}{90}\right)\)
\(B=910.\left(\frac{1}{7.8}+\frac{1}{8.9}+\frac{1}{9.10}\right)\)
\(B=910.\left(\frac{1}{7}-\frac{1}{8}+\frac{1}{8}-\frac{1}{9}+\frac{1}{9}-\frac{1}{10}\right)\)
\(B=910.\left[\frac{1}{7}+\left(\frac{1}{8}-\frac{1}{8}\right)+\left(\frac{1}{9}-\frac{1}{9}\right)-\frac{1}{10}\right]\)
\(B=910.\left[\frac{1}{7}-\frac{1}{10}\right]\)
\(B=910.\frac{3}{70}=39\)
~ Hok tốt ~
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#)Giải :
\(B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(B=70.\left(\frac{13}{56}+\frac{13}{72}+\frac{13}{90}\right)\)( cùng chia cho 10101 )
\(B=70.\frac{39}{70}\)
\(B=39\)( trên dưới tử mẫu có 70 => loại )
#~Will~be~Pens~#
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Xem thêm câu trả lời
Tính giá trị biểu thức:a,Aleft(-1right).left(-1right)^2.left(-1^3right).left(-1right)^4...........left(-1right)^{2016}.left(-1right)^{2017}b,B70.left(frac{131313}{565656}+frac{131313}{727272}+frac{131313}{909090}right)c,Cfrac{2a}{3b}+frac{3b}{4c}+frac{4c}{5d}+frac{5d}{2a}biếtfrac{2a}{3b}frac{3b}{4c}frac{4c}{5d}frac{5d}{2a}
Đọc tiếp
Tính giá trị biểu thức:
\(a,A=\left(-1\right).\left(-1\right)^2.\left(-1^3\right).\left(-1\right)^4...........\left(-1\right)^{2016}.\left(-1\right)^{2017}\)
\(b,B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(c,C=\frac{2a}{3b}+\frac{3b}{4c}+\frac{4c}{5d}+\frac{5d}{2a}\)
biết\(\frac{2a}{3b}=\frac{3b}{4c}=\frac{4c}{5d}=\frac{5d}{2a}\)
Câu hỏi của ✨♔♕ Saiko ♕♔✨ - Toán lớp 6 - Học toán với OnlineMath
1,Tìm x:
\(\frac{3}{2}.x-70\frac{10}{11}:\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\right)=-5\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}=-5\right)\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left(\frac{13}{15}+\frac{13}{35}+\frac{13}{63}+\frac{13}{99}\right)=-5\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left[13\times\left(\frac{1}{15}+\frac{1}{35}+\frac{1}{63}+\frac{1}{99}\right)\right]=-5\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left[13\times\left(\frac{1}{3.5}+\frac{1}{5.7}+\frac{1}{7.9}+\frac{1}{9.11}\right)\right]=-5\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left[13\times\left(\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{7}+\frac{1}{7}-\frac{1}{9}+\frac{1}{9}-\frac{1}{11}\right)\right]=-5\)
\(\frac{3}{2}.x-70\frac{10}{11}:\left[13\times\left(\frac{1}{3}-\frac{1}{11}\right)\right]=-5\)
\(\frac{3}{2}.x-\frac{45}{2}=-5\)
\(\frac{3}{2}.x=\frac{35}{2}\)
\(x=\frac{35}{3}\)
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bài phát sai òi hihi cần mk chỉ chỗ sai ko
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\(\frac{2}{3}x-70\frac{10}{11};\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\right)=-5\)