99-4x=2x+21

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Solution for 99-4x=2x+21 equation:


Simplifying
99 + -4x = 2x + 21

Reorder the terms:
99 + -4x = 21 + 2x

Solving
99 + -4x = 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.
99 + -4x + -2x = 21 + 2x + -2x

Combine like terms: -4x + -2x = -6x
99 + -6x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
99 + -6x = 21 + 0
99 + -6x = 21

Add '-99' to each side of the equation.
99 + -99 + -6x = 21 + -99

Combine like terms: 99 + -99 = 0
0 + -6x = 21 + -99
-6x = 21 + -99

Combine like terms: 21 + -99 = -78
-6x = -78

Divide each side by '-6'.
x = 13

Simplifying
x = 13

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