2x+21-x+21=-2

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Solution for 2x+21-x+21=-2 equation:


Simplifying
2x + 21 + -1x + 21 = -2

Reorder the terms:
21 + 21 + 2x + -1x = -2

Combine like terms: 21 + 21 = 42
42 + 2x + -1x = -2

Combine like terms: 2x + -1x = 1x
42 + 1x = -2

Solving
42 + 1x = -2

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + 1x = -2 + -42

Combine like terms: 42 + -42 = 0
0 + 1x = -2 + -42
1x = -2 + -42

Combine like terms: -2 + -42 = -44
1x = -44

Divide each side by '1'.
x = -44

Simplifying
x = -44

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