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X+X:0,5+X:0,25+X:0,125=5
X+X x 2+ X x 4 + X x 8 =5
X x (1+2+4+8)=5
X x 15 =5
X=5 : 15
X=\(\frac{1}{3}\)
Vậy X=\(\frac{1}{3}\)
x + x : 0,5 + x : 0,25 + x : 0,125 = 5
=> x + x . 2 + x . 4 + x . 8 = 5
=> x(1 + 2 + 4 + 8) = 5
=> x.15 = 5
=> x = 5 : 15
=> x = 1/3
![](https://rs.olm.vn/images/avt/0.png?1311)
140 - 0,5 x 40 x 5 x 0,2 x 20 x 0,25 - 40
= (140 - 40 ) - (0,5x20) x (40 x 0,25)
= 100 - 100
= 0
140 - 0,5 x 40 x 5 x 0,2 x 20 x 0,25 - 40
= (140 - 40 ) - (0,5x20) x (40 x 0,25)
= 100 - 100
= 0
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{19,8\times2\times44,44\times2\times13,2\times4}{3,3\times88,8\times2\times6,6\times4\times5}=\frac{19,8\times44,44\times2\times13,2}{3,3\times44,44\times2\times6,6\times5}\)
\(\frac{19,8\times6,6\times2}{3,3\times6,6\times5}=\frac{19,8\times2}{3,3\times5}=\frac{3,3\times6\times2}{3,3\times5}=\frac{12}{5}\)
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\(x+x:0,5+x:0,25+x:0,125=5\)
\(< =>x+x.\frac{1}{2}+x.\frac{1}{4}+x.\frac{1}{8}=5\)
\(< =>x.\left(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\right)=5\)
\(< =>x.\frac{15}{8}=5< =>\frac{15x}{8}=5\)
\(< =>15x=40< =>x=\frac{40}{15}=\frac{8}{3}\)
x + x : 0,5 + x : 0,25 + x : 0,125 = 5
x + x . 2 + x . 4 + x . 8 = 5
x . ( 1 + 2 + 4 + 8 ) = 5
x . 15 = 5
x = 5 : 15
x = \(\frac{1}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) (1,25 - 0,25 x 5) x (1,1 x 1,2 x 1,3 x 1,4 x 1,5)
= ( 1,25 - 1,25 ) x (1,1 x 1,2 x1,3 x 1,4 x 1,5)
= 0 x (1,1 x 1,2 x 1,3 x 1,4 x 1,5 )
= 0
![](https://rs.olm.vn/images/avt/0.png?1311)
x : 0.01 + x *0.125 + x:0.5 =330
x: 0.01 +x: 8 +x:0.5 =330
x:(0.01+8+0.5)=330
x: 8.51=330
x =\(x\approx38\)
![](https://rs.olm.vn/images/avt/0.png?1311)
224 - 0,5 x 40 x 5 x 0.2 x 20 x 0.25
= 224 - ( 0.5 x 20 ) x ( 40 x 0.25 ) x ( 5 x 0.2 )
= 224 - 10 x 10 x 1
= 224 - 100
= 124
\(x:0,25+x:0,5+x\times5=330\)
\(x\times4+x\times2+x\times5=330\)
\(x\times\left(4+2+5\right)=330\)
\(x\times11=330\)
\(x=330:11\)
\(x=30\)
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