112-3x=4x+21

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Solution for 112-3x=4x+21 equation:


Simplifying
112 + -3x = 4x + 21

Reorder the terms:
112 + -3x = 21 + 4x

Solving
112 + -3x = 21 + 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.
112 + -3x + -4x = 21 + 4x + -4x

Combine like terms: -3x + -4x = -7x
112 + -7x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
112 + -7x = 21 + 0
112 + -7x = 21

Add '-112' to each side of the equation.
112 + -112 + -7x = 21 + -112

Combine like terms: 112 + -112 = 0
0 + -7x = 21 + -112
-7x = 21 + -112

Combine like terms: 21 + -112 = -91
-7x = -91

Divide each side by '-7'.
x = 13

Simplifying
x = 13

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