3x-x-x+7=-15

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Solution for 3x-x-x+7=-15 equation:


Simplifying
3x + -1x + -1x + 7 = -15

Reorder the terms:
7 + 3x + -1x + -1x = -15

Combine like terms: 3x + -1x = 2x
7 + 2x + -1x = -15

Combine like terms: 2x + -1x = 1x
7 + 1x = -15

Solving
7 + 1x = -15

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + 1x = -15 + -7

Combine like terms: 7 + -7 = 0
0 + 1x = -15 + -7
1x = -15 + -7

Combine like terms: -15 + -7 = -22
1x = -22

Divide each side by '1'.
x = -22

Simplifying
x = -22

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