-5x+21+7x+21=-6

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Solution for -5x+21+7x+21=-6 equation:


Simplifying
-5x + 21 + 7x + 21 = -6

Reorder the terms:
21 + 21 + -5x + 7x = -6

Combine like terms: 21 + 21 = 42
42 + -5x + 7x = -6

Combine like terms: -5x + 7x = 2x
42 + 2x = -6

Solving
42 + 2x = -6

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 + 2x = -6 + -42

Combine like terms: 42 + -42 = 0
0 + 2x = -6 + -42
2x = -6 + -42

Combine like terms: -6 + -42 = -48
2x = -48

Divide each side by '2'.
x = -24

Simplifying
x = -24

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