4x+99=8x-9

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Solution for 4x+99=8x-9 equation:


Simplifying
4x + 99 = 8x + -9

Reorder the terms:
99 + 4x = 8x + -9

Reorder the terms:
99 + 4x = -9 + 8x

Solving
99 + 4x = -9 + 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 + 4x + -8x = -9 + 8x + -8x

Combine like terms: 4x + -8x = -4x
99 + -4x = -9 + 8x + -8x

Combine like terms: 8x + -8x = 0
99 + -4x = -9 + 0
99 + -4x = -9

Add '-99' to each side of the equation.
99 + -99 + -4x = -9 + -99

Combine like terms: 99 + -99 = 0
0 + -4x = -9 + -99
-4x = -9 + -99

Combine like terms: -9 + -99 = -108
-4x = -108

Divide each side by '-4'.
x = 27

Simplifying
x = 27

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