7+12x=40+x

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Solution for 7+12x=40+x equation:


Simplifying
7 + 12x = 40 + x

Solving
7 + 12x = 40 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
7 + 12x + -1x = 40 + x + -1x

Combine like terms: 12x + -1x = 11x
7 + 11x = 40 + x + -1x

Combine like terms: x + -1x = 0
7 + 11x = 40 + 0
7 + 11x = 40

Add '-7' to each side of the equation.
7 + -7 + 11x = 40 + -7

Combine like terms: 7 + -7 = 0
0 + 11x = 40 + -7
11x = 40 + -7

Combine like terms: 40 + -7 = 33
11x = 33

Divide each side by '11'.
x = 3

Simplifying
x = 3

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