3x+112=7x+40

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Solution for 3x+112=7x+40 equation:


Simplifying
3x + 112 = 7x + 40

Reorder the terms:
112 + 3x = 7x + 40

Reorder the terms:
112 + 3x = 40 + 7x

Solving
112 + 3x = 40 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
112 + 3x + -7x = 40 + 7x + -7x

Combine like terms: 3x + -7x = -4x
112 + -4x = 40 + 7x + -7x

Combine like terms: 7x + -7x = 0
112 + -4x = 40 + 0
112 + -4x = 40

Add '-112' to each side of the equation.
112 + -112 + -4x = 40 + -112

Combine like terms: 112 + -112 = 0
0 + -4x = 40 + -112
-4x = 40 + -112

Combine like terms: 40 + -112 = -72
-4x = -72

Divide each side by '-4'.
x = 18

Simplifying
x = 18

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