.20(x+20)+x=40

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Solution for .20(x+20)+x=40 equation: 


Simplifying
0.20(x + 20) + x = 40

Reorder the terms:
0.20(20 + x) + x = 40
(20 * 0.20 + x * 0.20) + x = 40
(4 + 0.20x) + x = 40

Combine like terms: 0.20x + x = 1.2x
4 + 1.2x = 40

Solving
4 + 1.2x = 40

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 1.2x = 40 + -4

Combine like terms: 4 + -4 = 0
0 + 1.2x = 40 + -4
1.2x = 40 + -4

Combine like terms: 40 + -4 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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