5-3x-21=4-2x-8

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Solution for 5-3x-21=4-2x-8 equation:


Simplifying
5 + -3x + -21 = 4 + -2x + -8

Reorder the terms:
5 + -21 + -3x = 4 + -2x + -8

Combine like terms: 5 + -21 = -16
-16 + -3x = 4 + -2x + -8

Reorder the terms:
-16 + -3x = 4 + -8 + -2x

Combine like terms: 4 + -8 = -4
-16 + -3x = -4 + -2x

Solving
-16 + -3x = -4 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-16 + -3x + 2x = -4 + -2x + 2x

Combine like terms: -3x + 2x = -1x
-16 + -1x = -4 + -2x + 2x

Combine like terms: -2x + 2x = 0
-16 + -1x = -4 + 0
-16 + -1x = -4

Add '16' to each side of the equation.
-16 + 16 + -1x = -4 + 16

Combine like terms: -16 + 16 = 0
0 + -1x = -4 + 16
-1x = -4 + 16

Combine like terms: -4 + 16 = 12
-1x = 12

Divide each side by '-1'.
x = -12

Simplifying
x = -12

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