-720=x+9x

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Solution for -720=x+9x equation:


Simplifying
-720 = x + 9x

Combine like terms: x + 9x = 10x
-720 = 10x

Solving
-720 = 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
-720 + -10x = 10x + -10x

Combine like terms: 10x + -10x = 0
-720 + -10x = 0

Add '720' to each side of the equation.
-720 + 720 + -10x = 0 + 720

Combine like terms: -720 + 720 = 0
0 + -10x = 0 + 720
-10x = 0 + 720

Combine like terms: 0 + 720 = 720
-10x = 720

Divide each side by '-10'.
x = -72

Simplifying
x = -72

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