(3x)+7=x-9

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Solution for (3x)+7=x-9 equation:


Simplifying
(3x) + 7 = x + -9

Reorder the terms:
7 + (3x) = x + -9

Reorder the terms:
7 + (3x) = -9 + x

Solving
7 + (3x) = -9 + 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 + (3x) + -1x = -9 + x + -1x

Combine like terms: (3x) + -1x = 2x
7 + 2x = -9 + x + -1x

Combine like terms: x + -1x = 0
7 + 2x = -9 + 0
7 + 2x = -9

Add '-7' to each side of the equation.
7 + -7 + 2x = -9 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = -9 + -7
2x = -9 + -7

Combine like terms: -9 + -7 = -16
2x = -16

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

Simplifying
x = -8

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