-5x-7=9x+21

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Solution for -5x-7=9x+21 equation:


Simplifying
-5x + -7 = 9x + 21

Reorder the terms:
-7 + -5x = 9x + 21

Reorder the terms:
-7 + -5x = 21 + 9x

Solving
-7 + -5x = 21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-7 + -5x + -9x = 21 + 9x + -9x

Combine like terms: -5x + -9x = -14x
-7 + -14x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
-7 + -14x = 21 + 0
-7 + -14x = 21

Add '7' to each side of the equation.
-7 + 7 + -14x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + -14x = 21 + 7
-14x = 21 + 7

Combine like terms: 21 + 7 = 28
-14x = 28

Divide each side by '-14'.
x = -2

Simplifying
x = -2

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