3x+5=12+x

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Solution for 3x+5=12+x equation:


Simplifying
3x + 5 = 12 + x

Reorder the terms:
5 + 3x = 12 + x

Solving
5 + 3x = 12 + 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.
5 + 3x + -1x = 12 + x + -1x

Combine like terms: 3x + -1x = 2x
5 + 2x = 12 + x + -1x

Combine like terms: x + -1x = 0
5 + 2x = 12 + 0
5 + 2x = 12

Add '-5' to each side of the equation.
5 + -5 + 2x = 12 + -5

Combine like terms: 5 + -5 = 0
0 + 2x = 12 + -5
2x = 12 + -5

Combine like terms: 12 + -5 = 7
2x = 7

Divide each side by '2'.
x = 3.5

Simplifying
x = 3.5

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