7x-99=-3x+111

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Solution for 7x-99=-3x+111 equation:


Simplifying
7x + -99 = -3x + 111

Reorder the terms:
-99 + 7x = -3x + 111

Reorder the terms:
-99 + 7x = 111 + -3x

Solving
-99 + 7x = 111 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-99 + 7x + 3x = 111 + -3x + 3x

Combine like terms: 7x + 3x = 10x
-99 + 10x = 111 + -3x + 3x

Combine like terms: -3x + 3x = 0
-99 + 10x = 111 + 0
-99 + 10x = 111

Add '99' to each side of the equation.
-99 + 99 + 10x = 111 + 99

Combine like terms: -99 + 99 = 0
0 + 10x = 111 + 99
10x = 111 + 99

Combine like terms: 111 + 99 = 210
10x = 210

Divide each side by '10'.
x = 21

Simplifying
x = 21

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