x-99=4(x+18)

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Solution for x-99=4(x+18) equation:


Simplifying
x + -99 = 4(x + 18)

Reorder the terms:
-99 + x = 4(x + 18)

Reorder the terms:
-99 + x = 4(18 + x)
-99 + x = (18 * 4 + x * 4)
-99 + x = (72 + 4x)

Solving
-99 + x = 72 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-99 + x + -4x = 72 + 4x + -4x

Combine like terms: x + -4x = -3x
-99 + -3x = 72 + 4x + -4x

Combine like terms: 4x + -4x = 0
-99 + -3x = 72 + 0
-99 + -3x = 72

Add '99' to each side of the equation.
-99 + 99 + -3x = 72 + 99

Combine like terms: -99 + 99 = 0
0 + -3x = 72 + 99
-3x = 72 + 99

Combine like terms: 72 + 99 = 171
-3x = 171

Divide each side by '-3'.
x = -57

Simplifying
x = -57

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