3x-12+8x=87

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Solution for 3x-12+8x=87 equation:


Simplifying
3x + -12 + 8x = 87

Reorder the terms:
-12 + 3x + 8x = 87

Combine like terms: 3x + 8x = 11x
-12 + 11x = 87

Solving
-12 + 11x = 87

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 11x = 87 + 12

Combine like terms: -12 + 12 = 0
0 + 11x = 87 + 12
11x = 87 + 12

Combine like terms: 87 + 12 = 99
11x = 99

Divide each side by '11'.
x = 9

Simplifying
x = 9

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