.90(x+30)+.90x=108

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Solution for .90(x+30)+.90x=108 equation:


Simplifying
0.90(x + 30) + 0.90x = 108

Reorder the terms:
0.90(30 + x) + 0.90x = 108
(30 * 0.90 + x * 0.90) + 0.90x = 108
(27 + 0.90x) + 0.90x = 108

Combine like terms: 0.90x + 0.90x = 1.8x
27 + 1.8x = 108

Solving
27 + 1.8x = 108

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + 1.8x = 108 + -27

Combine like terms: 27 + -27 = 0
0 + 1.8x = 108 + -27
1.8x = 108 + -27

Combine like terms: 108 + -27 = 81
1.8x = 81

Divide each side by '1.8'.
x = 45

Simplifying
x = 45

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