3x+123=8x-7

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Solution for 3x+123=8x-7 equation:


Simplifying
3x + 123 = 8x + -7

Reorder the terms:
123 + 3x = 8x + -7

Reorder the terms:
123 + 3x = -7 + 8x

Solving
123 + 3x = -7 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
123 + 3x + -8x = -7 + 8x + -8x

Combine like terms: 3x + -8x = -5x
123 + -5x = -7 + 8x + -8x

Combine like terms: 8x + -8x = 0
123 + -5x = -7 + 0
123 + -5x = -7

Add '-123' to each side of the equation.
123 + -123 + -5x = -7 + -123

Combine like terms: 123 + -123 = 0
0 + -5x = -7 + -123
-5x = -7 + -123

Combine like terms: -7 + -123 = -130
-5x = -130

Divide each side by '-5'.
x = 26

Simplifying
x = 26

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