40(0.9-x)=5x

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Solution for 40(0.9-x)=5x equation:


Simplifying
40(0.9 + -1x) = 5x
(0.9 * 40 + -1x * 40) = 5x
(36 + -40x) = 5x

Solving
36 + -40x = 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.
36 + -40x + -5x = 5x + -5x

Combine like terms: -40x + -5x = -45x
36 + -45x = 5x + -5x

Combine like terms: 5x + -5x = 0
36 + -45x = 0

Add '-36' to each side of the equation.
36 + -36 + -45x = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -45x = 0 + -36
-45x = 0 + -36

Combine like terms: 0 + -36 = -36
-45x = -36

Divide each side by '-45'.
x = 0.8

Simplifying
x = 0.8

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