3x-7=-x-8

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Solution for 3x-7=-x-8 equation:


Simplifying
3x + -7 = -1x + -8

Reorder the terms:
-7 + 3x = -1x + -8

Reorder the terms:
-7 + 3x = -8 + -1x

Solving
-7 + 3x = -8 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-7 + 3x + x = -8 + -1x + x

Combine like terms: 3x + x = 4x
-7 + 4x = -8 + -1x + x

Combine like terms: -1x + x = 0
-7 + 4x = -8 + 0
-7 + 4x = -8

Add '7' to each side of the equation.
-7 + 7 + 4x = -8 + 7

Combine like terms: -7 + 7 = 0
0 + 4x = -8 + 7
4x = -8 + 7

Combine like terms: -8 + 7 = -1
4x = -1

Divide each side by '4'.
x = -0.25

Simplifying
x = -0.25

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