-9x-77=21-2x

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Solution for -9x-77=21-2x equation:


Simplifying
-9x + -77 = 21 + -2x

Reorder the terms:
-77 + -9x = 21 + -2x

Solving
-77 + -9x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-77 + -9x + 2x = 21 + -2x + 2x

Combine like terms: -9x + 2x = -7x
-77 + -7x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-77 + -7x = 21 + 0
-77 + -7x = 21

Add '77' to each side of the equation.
-77 + 77 + -7x = 21 + 77

Combine like terms: -77 + 77 = 0
0 + -7x = 21 + 77
-7x = 21 + 77

Combine like terms: 21 + 77 = 98
-7x = 98

Divide each side by '-7'.
x = -14

Simplifying
x = -14

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