12+3x+3+6=5+x

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Solution for 12+3x+3+6=5+x equation:


Simplifying
12 + 3x + 3 + 6 = 5 + x

Reorder the terms:
12 + 3 + 6 + 3x = 5 + x

Combine like terms: 12 + 3 = 15
15 + 6 + 3x = 5 + x

Combine like terms: 15 + 6 = 21
21 + 3x = 5 + x

Solving
21 + 3x = 5 + 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.
21 + 3x + -1x = 5 + x + -1x

Combine like terms: 3x + -1x = 2x
21 + 2x = 5 + x + -1x

Combine like terms: x + -1x = 0
21 + 2x = 5 + 0
21 + 2x = 5

Add '-21' to each side of the equation.
21 + -21 + 2x = 5 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 5 + -21
2x = 5 + -21

Combine like terms: 5 + -21 = -16
2x = -16

Divide each side by '2'.
x = -8

Simplifying
x = -8

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