0,2:\(1\frac{1}{5}\)=2/3 : [6x +7]
\(3\frac{1}{3}\): 4,8 = 0,5x :7
[31/30-26/25] . -36/35 < x<[51/56 +8/21 + 1/3 ] . 8/3
1/3 +3/35 < x/210 < 4/7 +3/5 + 1/3 tìm x
Những câu hỏi liên quan
Các bạn giúp mình vs huhu
a) 3 1/3 : 4,8 = 0,5x : 7
b) 2x - 5/4 = ( 3- 1/2) x ( x- 1/2)
C) 0,2 : 1 1/5 = 2/3 x ( 6x +7)
D) |x-1| + 1= 2x-3
tìm x
a) \(3\frac{1}{3}:1\frac{1}{3}=26:\left(2x-1\right)\)
b)0,2:\(1\frac{1}{5}=\frac{2}{3}:\left(6x+7\right)\)
Tìm số hữu tỉ x trong tỉ lệ thức :
a ) 0,4 ; x = x : 0,9
b ) \(13\frac{1}{3}:1\frac{1}{3}=26:\left(2x-1\right)\)
c ) \(0,2:1\frac{1}{5}=\frac{2}{3}:\left(6x+7\right)\)
d ) \(\frac{37-x}{x+13}=\frac{3}{7}\)
TÌm số hữu tỉ x trong tỉ lệ thức:
a) 0,4 : x = x : 0,9
b) \(13\frac{1}{3}:1\frac{1}{3}=26:\left(2x-1\right)\)
c) \(0,2:1\frac{1}{5}=\frac{2}{3}:\left(6x+7\right)\)
d) \(\frac{37-x}{x+13}=\frac{3}{7}\)
a, 0,4 : x = x : 0,9
<=> x2 = 0,4 . 0,9
<=> x2 = 0,36
<=> x = 0,6 hoặc -0,6
b, \(13\frac{1}{3}\div1\frac{1}{3}=26\div\left(2x-1\right)\)
\(\Leftrightarrow\frac{40}{3}\div\frac{4}{3}=26\div\left(2x-1\right)\)
\(\Leftrightarrow10=26\div\left(2x-1\right)\)
\(\Leftrightarrow2x-1=\frac{13}{5}\)
\(\Leftrightarrow2x=\frac{18}{5}\)
\(\Leftrightarrow x=\frac{9}{5}\)
c, \(0,2\div1\frac{1}{5}=\frac{2}{3}\div\left(6x+7\right)\)
\(\Leftrightarrow\frac{1}{5}\div\frac{6}{5}=\frac{2}{3}\div\left(6x+7\right)\)
\(\Leftrightarrow\frac{1}{6}=\frac{2}{3}\div\left(6x+7\right)\)
\(\Leftrightarrow6x+7=4\)
\(\Leftrightarrow6x=-3\)
\(\Leftrightarrow x=\frac{-1}{2}\)
d, \(\frac{37-x}{x+13}=\frac{3}{7}\)
\(\Leftrightarrow7\left(37-x\right)=3\left(x+13\right)\)
\(\Leftrightarrow259-7x=3x+39\)
\(\Leftrightarrow-10x=-220\)
\(\Leftrightarrow x=22\)
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Tìm số hữu tỉ x trong các tỉ lệ thức :
a ) 0,4 : x = x : 0,9
b )\(13\frac{1}{3}:1\frac{1}{3}=26:\left(2x-1\right)\)
c ) \(0,2:1\frac{1}{5}=\frac{2}{3}:\left(6x+7\right)\)
d ) \(\frac{37x}{x+13}=\frac{3}{7}\)
a, x=0,6
b,x=1,8
c,x=-0,5
d,x=\(\frac{39}{256}\)
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Tìm số nguyên x
a) \(\frac{1}{3}+\frac{-2}{5}+\frac{1}{6}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{2}{7}+\frac{-1}{4}+\frac{3}{5}+\frac{5}{7}\)
b)\(\frac{5}{17}+\frac{-9}{4}+\frac{-26}{31}+\frac{12}{17}+\frac{-11}{31}< \frac{x}{9}\le\frac{-3}{7}+\frac{7}{15}+\frac{4}{-7}+\frac{8}{15}\)
\(a)\frac{1}{3}+\frac{-2}{5}+\frac{1}{6}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{2}{7}+\frac{-1}{4}+\frac{3}{5}+\frac{5}{7}\)
\(\Rightarrow\frac{1}{3}+\frac{1}{6}+\frac{-2}{5}+\frac{-1}{5}\le x< \frac{-3}{4}+\frac{-1}{4}+\frac{2}{7}+\frac{5}{7}+\frac{3}{5}\)
\(\Rightarrow\frac{2}{6}+\frac{1}{6}+\frac{-3}{5}\le x< -1+1+\frac{3}{5}\)
\(\Rightarrow\frac{1}{2}+\frac{-3}{5}\le x< \frac{3}{5}\)
\(\Rightarrow\frac{-1}{10}\le x< \frac{6}{10}\)
\(\Rightarrow-1\le x< 6\)
\(\Rightarrow x\in\left\{-1;0;1;2;3;4;5\right\}\)
Bài b tương tự
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bạn ơi bạn giải câu b được ko. mk ko biết làm câu b
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1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37=
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37
=(1+37)x37:2
=703
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Xem thêm câu trả lời
tìm x
a. \(14\frac{1}{3}\):\(1\frac{1}{3}\)=26:(2x-1)
b.0,2:\(1\frac{1}{5}\)=\(\frac{2}{3}\):(6x+7)
c.\(\frac{37-x}{x+16}\)=\(\frac{3}{7}\)
d.\(\frac{72-x}{7}\)=\(\frac{x-70}{9}\)
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+149+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39*100
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