0.4(x+90)+0.8x=72

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Solution for 0.4(x+90)+0.8x=72 equation: 


Simplifying
0.4(x + 90) + 0.8x = 72

Reorder the terms:
0.4(90 + x) + 0.8x = 72
(90 * 0.4 + x * 0.4) + 0.8x = 72
(36 + 0.4x) + 0.8x = 72

Combine like terms: 0.4x + 0.8x = 1.2x
36 + 1.2x = 72

Solving
36 + 1.2x = 72

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 1.2x = 72 + -36

Combine like terms: 36 + -36 = 0
0 + 1.2x = 72 + -36
1.2x = 72 + -36

Combine like terms: 72 + -36 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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