5x+9=7x-123

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Solution for 5x+9=7x-123 equation:


Simplifying
5x + 9 = 7x + -123

Reorder the terms:
9 + 5x = 7x + -123

Reorder the terms:
9 + 5x = -123 + 7x

Solving
9 + 5x = -123 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
9 + 5x + -7x = -123 + 7x + -7x

Combine like terms: 5x + -7x = -2x
9 + -2x = -123 + 7x + -7x

Combine like terms: 7x + -7x = 0
9 + -2x = -123 + 0
9 + -2x = -123

Add '-9' to each side of the equation.
9 + -9 + -2x = -123 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = -123 + -9
-2x = -123 + -9

Combine like terms: -123 + -9 = -132
-2x = -132

Divide each side by '-2'.
x = 66

Simplifying
x = 66

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