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\(x\) : 0,25 + \(x\) x 11 = 24
\(x\) x 4 + \(x\) x 11 = 24
\(x\) x (4 + 11) = 24
\(x\) x 15 = 24
x = 24 : 15
x = 1,6
x : 0,25 + x x 11 = 24
X x 4 + X x 11 = 24
X x ( 4 + 11 ) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
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![](https://rs.olm.vn/images/avt/0.png?1311)
a) x : 0,125 - x = 45
x * 1/8 - x = 45
x * (1/8 - 1) = 45
x * -7/8 = 45
x = -360/7
b) x : 0,2 + x * 5 - x : 0,25 = 54,75
x * 1/5 + x * 5 - x * 1/4 = 54,75
x * (1/5 + 5 - 1/4) = 54,75
x * 99/20 = 54,75
x = 365/33
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0,25 x 3 + 1 : 4 x 7
= 0,25 (3+7)
= 0,25 x 10
= 2,5
X x 1.2 + X x 1.8 = 45
X [1(2+8)] = 45
X [1 x 10] = 45
X x 10 = 45
X = 45 : 10
X = 4,5
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![](https://rs.olm.vn/images/avt/0.png?1311)
a.X x 5 + X x4 = 36
X (5+4) = 36
X = 4
b. X x 4 - X x3 = 18
X (4-3) = 18
X = 18
X :0,2 + x X 4=36
X :2/10+x x 4=36
x x10/2+x x 4 =36
x x5 + x x4 =36
x x (4+5)=36
x x 9 =36
x=36:9
x=4
x :0.25 - x x 3 =18
x:25/100- x x 3=18
x x100/25- x x 3=18
x x 4- x x 3 =18
x x(4-3)=18
x x 1=18
x=18:1
x=18
![](https://rs.olm.vn/images/avt/0.png?1311)
X : 0,25 + X x 11 = 45
X x 4 + X x 11 = 45
X x (4 + 11) = 45
X x 15 = 45
X = 45 : 15
X = 3
X : 0,25 + X x 11 = 45
X x 4 + X x 11 = 45
X x (4 + 11) = 45
X x 15 = 45
X = 45 : 15
X = 3