\(\frac{1}{3}+\frac{3}{35}<\frac{x}{210}<\frac{4}{7}+\frac{3}{5}+\frac{1}{3}\)
DIễn giải giúp mình nha ^^
Những câu hỏi liên quan
\(\frac{1x2x3+3x6x9+5x10x15}{2x4x6+6x12x18+10x20x30}\)
\(\frac{\frac{1}{3}+\frac{1}{7}-\frac{1}{21}+\frac{1}{35}}{\frac{2}{3}+\frac{2}{7}-\frac{2}{21}+\frac{2}{35}}\)
\(\frac{0,25+\frac{1}{9}-\frac{1}{11}}{0,75+\frac{1}{3}-\frac{3}{11}}+\frac{2}{3}\)
Tính nhanh :
\(C=\frac{1}{3}+\frac{-3}{4}+\frac{3}{5}+\frac{1}{57}+\frac{-1}{36}+\frac{1}{15}+\frac{-2}{9}\)
\(D=\frac{1}{2}+\frac{-1}{5}+\frac{-5}{7}+\frac{1}{6}+\frac{-3}{35}+\frac{1}{3}+\frac{1}{41}\)
\(E=\frac{-1}{2}+\frac{3}{5}+\frac{-1}{9}+\frac{1}{127}+\frac{-7}{18}+\frac{4}{35}+\frac{2}{7}\)
C = 1/3 + -3/4 + 3/5 + 1/57 + -1/36 + 1/15 + -2/9
C = ( 1/3 + 1/57 ) + ( -3/4 + -1/36 ) + ( 3/5 + 1/15 ) + -2/9
C = ( 19/57 + 1/57 ) + ( -27/36 + -1/36 ) + ( 9/15 + 1/15 ) + -2/9
C = 20/57 + -28/36 + 10/15 + -2/9
C = 20/57 + -7/9 + 2/3 + -2/9
C = ( 20/57 + 2/3 ) + ( -7/9 + -2/9 )
C = 58/57 + -1
C = 1/57
D = 1/2 + -1/5 + -5/7 + 1/6 + -3/35 + 1/3 + 1/41
D = ( 1/2 + 1/3 + 1/6 ) + ( -1/5 + -5/7 +-3/35 ) + 1/41
D = ( 3/6 + 2/6 + 1/6 ) + ( -7/35 + -25/35 + -3/35 ) + 1/41
D = 1 + -1 + 1/41
D = 1/41
E = -1/2 + 3/5 + -1/9 + 1/127 + -7/18 + 4/35 + 2/7
E = ( -1/2 + -1/9 + -7/18 ) + ( 3/5 + 4/35 ) + 1/127 + 2/7
E = ( -9/18 + -2/18 + -7/18 ) + ( 21/35 + 4/35 ) + 1/127 + 2/7
E = -1 + 5/7 + 1/257 + 2/7
E = -1 + ( 5/7 + 2/7 ) + 1/127
E = -1 + 1 + 1/127
E = 1/127
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\(C=\frac{1}{3}+\frac{-3}{4}+\frac{3}{5}+\frac{1}{57}+\frac{-1}{36}+\frac{1}{15}+\frac{-2}{9}.\)
\(C=\left(\frac{1}{3}+\frac{3}{5}+\frac{1}{15}\right)-\left(\frac{3}{4}+\frac{1}{36}+\frac{2}{9}\right)+\frac{1}{57}\)
\(C=1-1+\frac{1}{57}\)
\(C=\frac{1}{57}\)
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D=1/2+-1/5+-5/7+1/6+-3/35+1/3+1/41
D=(1/2+1/6+1/3)-(1/5+3/35+5/7)+1/41
D=1-1+1/41
D=1/41
E=-1/2+3/5+-1/9+1/127+-7/18+4/35+2/7
E=(3/5+4/35+2/7)-(1/2+1/9+7/18)+1/127
E=1-1+1/127
E=1/127
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Xem thêm câu trả lời
Bài 1: Tìm x
\(\frac{3}{35}+\frac{3}{63}+\frac{3}{99}+...+\frac{3}{x.\left(x+2\right)}=\frac{24}{35}\)
\(\frac{3}{5.7}+\frac{3}{7.9}+...+\frac{3}{x.\left(x+2\right)}=\frac{24}{35}\)
\(\frac{3}{2}.\left(\frac{2}{5.7}+\frac{2}{7.9}+...+\frac{2}{x.\left(x+2\right)}\right)=\frac{24}{35}\)
\(\frac{3}{2}.\left(\frac{1}{5}-\frac{1}{x+2}\right)=\frac{24}{35}\)
\(\frac{3}{10}-\frac{3}{2x+4}=\frac{24}{35}\)
\(\frac{3}{2x+4}=\frac{-27}{70}\)
tự làm nốt
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\(\frac{3}{35}+\frac{3}{63}+\frac{3}{99}+....+\frac{3}{x\left(x+2\right)}=\frac{24}{35}\)
\(\Leftrightarrow3\left(\frac{1}{35}+\frac{1}{63}+\frac{1}{99}+....+\frac{1}{x\left(x+2\right)}\right)=\frac{24}{25}\)
\(\Leftrightarrow3\left(\frac{1}{5.7}+\frac{1}{7.9}+\frac{1}{9.11}+...+\frac{1}{x\left(x+2\right)}\right)=\frac{24}{35}\)
\(\Leftrightarrow3\left(\frac{1}{5}-\frac{1}{7}+\frac{1}{7}-\frac{1}{9}+\frac{1}{9}-\frac{1}{11}+....+\frac{1}{x}-\frac{1}{x+2}\right)=\frac{24}{35}\)
\(\Leftrightarrow3\left(\frac{1}{5}-\frac{1}{x+2}\right)=\frac{24}{35}\)
\(\Leftrightarrow\frac{3}{5}-\frac{3}{x+2}=\frac{24}{35}\)
\(\Leftrightarrow\frac{3}{x+2}=\frac{3}{5}-\frac{24}{35}\)
\(\Leftrightarrow\frac{3}{x+2}=\frac{21-24}{35}\)
\(\Leftrightarrow\frac{3}{x+2}=\frac{3}{-35}\)
\(\Rightarrow x+2=-35\Leftrightarrow x=-35-2\Leftrightarrow x=-37\)
Vậy \(x=-37\)
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\(\frac{\frac{2}{3}+3\left(\frac{2}{3}\right)^3-\left(\frac{5}{6}\right)^2}{\frac{7}{60}:\left(\frac{35}{31\cdot37}+\frac{35}{37\cdot43}+\frac{105}{43\cdot61}+\frac{35}{61\cdot67}\right)}\)
Giúp mình đi ai giúp đầu tặng 1 like
tính
\(\frac{1}{1!}+\frac{2}{2!}+\frac{3}{3!}+...+\frac{35}{35!}\)
\(2\frac{3}{5}x-\frac{1}{7}=1\frac{9}{35}\)\(3\frac{2}{3}x-\frac{1}{7}=1\frac{9}{35}\)\(\left(2\frac{4}{5}+50\right)\div\frac{2}{3}=-51\)
Xem chi tiết
giúp mik nha chiều này 6:00 mik nộp rồi
ai nhanh mik sẽ k cho 3 k
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\(2\frac{3}{5}x-\frac{1}{7}=1\frac{9}{35}\)
\(\frac{13}{5}x=\frac{44}{35}+\frac{1}{7}\)
\(\frac{13}{5}x=\frac{7}{5}\)
\(x=\frac{7}{5}:\frac{13}{5}\\ x=\frac{7}{13}\)
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1, \(2\frac{3}{5}x-\frac{1}{7}=1\frac{9}{35}\)
\(2\frac{3}{5}x=1\frac{9}{35}+\frac{1}{7}\)
\(2\frac{3}{5}x=\frac{7}{5}\)
\(x=\frac{7}{5}:2\frac{3}{5}\)
\(x=\frac{7}{13}\)
~ Thiên Mã ~
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Xem thêm câu trả lời
1) \(79\frac{19}{35}.\frac{7}{90}+15\frac{16}{35}.\frac{7}{90}\)
2)\(\left(3\frac{1}{5}-\frac{1}{11}\right).11\)
3)\(4\frac{1}{5}:\left(2\frac{1}{3}.1\frac{2}{5}\right)\)
4)\(13,2.\frac{15}{64}-\left(\frac{4}{5}+\frac{2}{3}\right):3\frac{2}{3}\)
CMR:
\(A=\frac{\sqrt{2}-1}{2+1}+\frac{\sqrt{3}-2}{3+2}+...+\frac{\sqrt{36}-35}{36+35}< \frac{5}{12}\)
1+\(\frac{3}{5}+\frac{3}{15}+\frac{3}{35}+...+\frac{3}{143}\)
1+\(\frac{3}{1.5}\)+\(\frac{3}{3.5}\)+\(\frac{3}{7.5}\)+...+\(\frac{3}{11.13}\)
1+( \(\frac{1}{1}\)-\(\frac{1}{5}\)+\(\frac{1}{3}\)-\(\frac{1}{5}\)+\(\frac{1}{7}\)-\(\frac{1}{5}\)+...+ \(\frac{1}{11}\)-\(\frac{1}{13}\))
1+ \(\frac{1}{13}\)
\(\frac{14}{13}\)
Mình chỉ làm theo ý hiểu nhưng cũng chẳng biết có đúng không ai thấy sai sửa hộ ạ.
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viết các phân số theo thứ tự từ bé đến lớn:
a)\(\frac{32}{35};\frac{18}{35};\frac{31}{35};\frac{28}{35}\)b)\(\frac{2}{3};\frac{3}{4};\frac{5}{6};\frac{1}{12}\)
trả lời nhanh đúng giải thích ra nhé !!!
a) \(\frac{18}{35};\frac{28}{35};\frac{31}{25};\frac{32}{25}\)
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