-3(x+1)-10=12+8

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Solution for -3(x+1)-10=12+8 equation: 


Simplifying
-3(x + 1) + -10 = 12 + 8

Reorder the terms:
-3(1 + x) + -10 = 12 + 8
(1 * -3 + x * -3) + -10 = 12 + 8
(-3 + -3x) + -10 = 12 + 8

Reorder the terms:
-3 + -10 + -3x = 12 + 8

Combine like terms: -3 + -10 = -13
-13 + -3x = 12 + 8

Combine like terms: 12 + 8 = 20
-13 + -3x = 20

Solving
-13 + -3x = 20

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + -3x = 20 + 13

Combine like terms: -13 + 13 = 0
0 + -3x = 20 + 13
-3x = 20 + 13

Combine like terms: 20 + 13 = 33
-3x = 33

Divide each side by '-3'.
x = -11

Simplifying
x = -11

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