12x-4-10x+15=-20

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Solution for 12x-4-10x+15=-20 equation:


Simplifying
12x + -4 + -10x + 15 = -20

Reorder the terms:
-4 + 15 + 12x + -10x = -20

Combine like terms: -4 + 15 = 11
11 + 12x + -10x = -20

Combine like terms: 12x + -10x = 2x
11 + 2x = -20

Solving
11 + 2x = -20

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + 2x = -20 + -11

Combine like terms: 11 + -11 = 0
0 + 2x = -20 + -11
2x = -20 + -11

Combine like terms: -20 + -11 = -31
2x = -31

Divide each side by '2'.
x = -15.5

Simplifying
x = -15.5

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