-99-7x=21+8x

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Solution for -99-7x=21+8x equation:


Simplifying
-99 + -7x = 21 + 8x

Solving
-99 + -7x = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-99 + -7x + -8x = 21 + 8x + -8x

Combine like terms: -7x + -8x = -15x
-99 + -15x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-99 + -15x = 21 + 0
-99 + -15x = 21

Add '99' to each side of the equation.
-99 + 99 + -15x = 21 + 99

Combine like terms: -99 + 99 = 0
0 + -15x = 21 + 99
-15x = 21 + 99

Combine like terms: 21 + 99 = 120
-15x = 120

Divide each side by '-15'.
x = -8

Simplifying
x = -8

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