-21=2(x+-8)+3x

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Solution for -21=2(x+-8)+3x equation:


Simplifying
-21 = 2(x + -8) + 3x

Reorder the terms:
-21 = 2(-8 + x) + 3x
-21 = (-8 * 2 + x * 2) + 3x
-21 = (-16 + 2x) + 3x

Combine like terms: 2x + 3x = 5x
-21 = -16 + 5x

Solving
-21 = -16 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-21 + -5x = -16 + 5x + -5x

Combine like terms: 5x + -5x = 0
-21 + -5x = -16 + 0
-21 + -5x = -16

Add '21' to each side of the equation.
-21 + 21 + -5x = -16 + 21

Combine like terms: -21 + 21 = 0
0 + -5x = -16 + 21
-5x = -16 + 21

Combine like terms: -16 + 21 = 5
-5x = 5

Divide each side by '-5'.
x = -1

Simplifying
x = -1

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