0.9(x+60)+0.3x=90

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Solution for 0.9(x+60)+0.3x=90 equation:


Simplifying
0.9(x + 60) + 0.3x = 90

Reorder the terms:
0.9(60 + x) + 0.3x = 90
(60 * 0.9 + x * 0.9) + 0.3x = 90
(54 + 0.9x) + 0.3x = 90

Combine like terms: 0.9x + 0.3x = 1.2x
54 + 1.2x = 90

Solving
54 + 1.2x = 90

Solving for variable 'x'.

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

Add '-54' to each side of the equation.
54 + -54 + 1.2x = 90 + -54

Combine like terms: 54 + -54 = 0
0 + 1.2x = 90 + -54
1.2x = 90 + -54

Combine like terms: 90 + -54 = 36
1.2x = 36

Divide each side by '1.2'.
x = 30

Simplifying
x = 30

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