-5x-10+7x-21=-2

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Solution for -5x-10+7x-21=-2 equation:


Simplifying
-5x + -10 + 7x + -21 = -2

Reorder the terms:
-10 + -21 + -5x + 7x = -2

Combine like terms: -10 + -21 = -31
-31 + -5x + 7x = -2

Combine like terms: -5x + 7x = 2x
-31 + 2x = -2

Solving
-31 + 2x = -2

Solving for variable 'x'.

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

Add '31' to each side of the equation.
-31 + 31 + 2x = -2 + 31

Combine like terms: -31 + 31 = 0
0 + 2x = -2 + 31
2x = -2 + 31

Combine like terms: -2 + 31 = 29
2x = 29

Divide each side by '2'.
x = 14.5

Simplifying
x = 14.5

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