3x+12=x+15

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Solution for 3x+12=x+15 equation:


Simplifying
3x + 12 = x + 15

Reorder the terms:
12 + 3x = x + 15

Reorder the terms:
12 + 3x = 15 + x

Solving
12 + 3x = 15 + 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.
12 + 3x + -1x = 15 + x + -1x

Combine like terms: 3x + -1x = 2x
12 + 2x = 15 + x + -1x

Combine like terms: x + -1x = 0
12 + 2x = 15 + 0
12 + 2x = 15

Add '-12' to each side of the equation.
12 + -12 + 2x = 15 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 15 + -12
2x = 15 + -12

Combine like terms: 15 + -12 = 3
2x = 3

Divide each side by '2'.
x = 1.5

Simplifying
x = 1.5

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