-31+21=-2x+7x

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Solution for -31+21=-2x+7x equation:


Simplifying
-31 + 21 = -2x + 7x

Combine like terms: -31 + 21 = -10
-10 = -2x + 7x

Combine like terms: -2x + 7x = 5x
-10 = 5x

Solving
-10 = 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.
-10 + -5x = 5x + -5x

Combine like terms: 5x + -5x = 0
-10 + -5x = 0

Add '10' to each side of the equation.
-10 + 10 + -5x = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -5x = 0 + 10
-5x = 0 + 10

Combine like terms: 0 + 10 = 10
-5x = 10

Divide each side by '-5'.
x = -2

Simplifying
x = -2

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