3-21=3x-8-2x

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


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

Combine like terms: 3 + -21 = -18
-18 = 3x + -8 + -2x

Reorder the terms:
-18 = -8 + 3x + -2x

Combine like terms: 3x + -2x = 1x
-18 = -8 + 1x

Solving
-18 = -8 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-18 + -1x = -8 + 1x + -1x

Combine like terms: 1x + -1x = 0
-18 + -1x = -8 + 0
-18 + -1x = -8

Add '18' to each side of the equation.
-18 + 18 + -1x = -8 + 18

Combine like terms: -18 + 18 = 0
0 + -1x = -8 + 18
-1x = -8 + 18

Combine like terms: -8 + 18 = 10
-1x = 10

Divide each side by '-1'.
x = -10

Simplifying
x = -10

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