.9(x+80)+.3x=108

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Solution for .9(x+80)+.3x=108 equation:


Simplifying
0.9(x + 80) + 0.3x = 108

Reorder the terms:
0.9(80 + x) + 0.3x = 108
(80 * 0.9 + x * 0.9) + 0.3x = 108
(72 + 0.9x) + 0.3x = 108

Combine like terms: 0.9x + 0.3x = 1.2x
72 + 1.2x = 108

Solving
72 + 1.2x = 108

Solving for variable 'x'.

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

Add '-72' to each side of the equation.
72 + -72 + 1.2x = 108 + -72

Combine like terms: 72 + -72 = 0
0 + 1.2x = 108 + -72
1.2x = 108 + -72

Combine like terms: 108 + -72 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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