tính M = (1618/1751+131313/686868):(1648/1751-131313/686868)
Những câu hỏi liên quan
Tính:
\(\left(\frac{1648}{1751}+\frac{131313}{686868}\right):\left(\frac{1648}{1751}-\frac{131313}{686868}\right)\)
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)
Tính giá trị
B=(1648/1751+131313/686868):(164816/175117+1313/6868)
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!!!!!!
Thực hiện phép tính:131313/151515+131313/353535+131313/636363+131313/999999
131313/151515+131313/353535+131313/636363+131313/999999=13/15+13/35+13/63+13/99
=52/33=1/19/33
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tìm x biết:2/3.x-70.10/11:(131313/151515+131313/353535+131313/636363+131313/999999)=-5
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left(\dfrac{131313}{151515}+\dfrac{131313}{353535}+\dfrac{131313}{636363}+\dfrac{131313}{999999}\right)=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left(\dfrac{13}{15}+\dfrac{13}{35}+\dfrac{13}{63}+\dfrac{13}{99}\right)=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left(\dfrac{13}{3.5}+\dfrac{13}{5.7}+\dfrac{13}{7.9}+\dfrac{13}{9.11}\right)=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left[\dfrac{13}{2}.\left(\dfrac{2}{3.5}+\dfrac{2}{5.7}+\dfrac{2}{7.9}+\dfrac{2}{9.11}\right)\right]=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left[\dfrac{13}{2}.\left(\dfrac{1}{3}-\dfrac{1}{5}+\dfrac{1}{5}-\dfrac{1}{7}+\dfrac{1}{7}-\dfrac{1}{9}+\dfrac{1}{9}-\dfrac{1}{11}\right)\right]=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left[\dfrac{13}{2}.\left(\dfrac{1}{3}-\dfrac{1}{11}\right)\right]=-5\)
\(\dfrac{2}{3}x-70.\dfrac{10}{11}:\left[\dfrac{13}{2}.\dfrac{8}{33}\right]=-5\)
\(\dfrac{2}{3}x-\dfrac{700}{11}:\dfrac{52}{33}=-5\)
\(\dfrac{2}{3}x-\dfrac{525}{13}=-5\)
\(\dfrac{2}{3}x=-5+\dfrac{525}{13}=\dfrac{460}{13}\)
\(x\) = \(\dfrac{460}{13}:\dfrac{2}{3}=\dfrac{690}{13}\).
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Tìm x
2/3x-780/11:(131313/151515+131313/353535+131313/636363+131313/999999)=-5
\(\Leftrightarrow\frac{2}{3}x-\frac{780}{11}:\left(\frac{13}{15}+\frac{13}{35}+\frac{13}{63}+\frac{13}{99}\right)=-5\)
\(\Leftrightarrow\frac{2}{3}x-40=0\)
\(\Leftrightarrow x=60\)
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Tính nhanh :
\(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)
\(=\frac{13\times10101}{15\times10101}+\frac{13\times10101}{35\times10101}+\frac{13\times10101}{63\times10101}+\frac{13\times10101}{99\times10101}\)
\(=\frac{13}{15}+\frac{13}{35}+\frac{13}{63}+\frac{13}{99}=\frac{13}{2}\times\left(\frac{2}{3\times5}+\frac{2}{5\times7}+\frac{3}{7\times9}+\frac{2}{9\times11}\right)\)
\(=\frac{13}{2}\times\left(\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{7}+\frac{1}{7}-\frac{1}{9}+\frac{1}{9}-\frac{1}{11}\right)=\frac{13}{2}\times\left(\frac{1}{3}-\frac{1}{11}\right)=\frac{13}{2}\times\frac{8}{33}=\frac{52}{33}\)
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\(\frac{13.10101}{15.10101}\)+\(\frac{13.10101}{15.10101}\)+\(\frac{13.10101}{63.10101}\)+ \(\frac{13.10101}{99.10101}\)= \(\frac{13}{15}\) + \(\frac{13}{15}\) + \(\frac{13}{63}\)+ \(\frac{13}{99}\) =\(2\frac{82}{1155}\)
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Kết quả của phép tính trên là \(\frac{52}{33}.\)
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Xem thêm câu trả lời
Tính nhnah: \(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)
\(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\)
=\(\frac{13}{15}+\frac{13}{35}+\frac{13}{63}+\frac{13}{99}\)
=\(13\left(\frac{1}{15}+\frac{1}{35}+\frac{1}{63}+\frac{1}{99}\right)\)
=\(13.\frac{1}{2}\left(\frac{2}{3.5}+\frac{2}{5.7}+\frac{2}{7.9}+\frac{2}{9.11}\right)\)
=\(\frac{13}{2}.\left(\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{7}+\frac{1}{7}-\frac{1}{9}+\frac{1}{9}-\frac{1}{11}\right)\)
=\(\frac{13}{2}.\left(\frac{1}{3}-\frac{1}{11}\right)\)
= \(\frac{13}{2}.\frac{8}{33}\)
=\(\frac{52}{33}\)
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