15(2+x)-3x=144

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Solution for 15(2+x)-3x=144 equation: 


Simplifying
15(2 + x) + -3x = 144
(2 * 15 + x * 15) + -3x = 144
(30 + 15x) + -3x = 144

Combine like terms: 15x + -3x = 12x
30 + 12x = 144

Solving
30 + 12x = 144

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 12x = 144 + -30

Combine like terms: 30 + -30 = 0
0 + 12x = 144 + -30
12x = 144 + -30

Combine like terms: 144 + -30 = 114
12x = 114

Divide each side by '12'.
x = 9.5

Simplifying
x = 9.5

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