9+3x=15+x

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Solution for 9+3x=15+x equation:


Simplifying
9 + 3x = 15 + x

Solving
9 + 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.
9 + 3x + -1x = 15 + x + -1x

Combine like terms: 3x + -1x = 2x
9 + 2x = 15 + x + -1x

Combine like terms: x + -1x = 0
9 + 2x = 15 + 0
9 + 2x = 15

Add '-9' to each side of the equation.
9 + -9 + 2x = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 15 + -9
2x = 15 + -9

Combine like terms: 15 + -9 = 6
2x = 6

Divide each side by '2'.
x = 3

Simplifying
x = 3

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