-123-7x=9x-21

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Solution for -123-7x=9x-21 equation:


Simplifying
-123 + -7x = 9x + -21

Reorder the terms:
-123 + -7x = -21 + 9x

Solving
-123 + -7x = -21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-123 + -7x + -9x = -21 + 9x + -9x

Combine like terms: -7x + -9x = -16x
-123 + -16x = -21 + 9x + -9x

Combine like terms: 9x + -9x = 0
-123 + -16x = -21 + 0
-123 + -16x = -21

Add '123' to each side of the equation.
-123 + 123 + -16x = -21 + 123

Combine like terms: -123 + 123 = 0
0 + -16x = -21 + 123
-16x = -21 + 123

Combine like terms: -21 + 123 = 102
-16x = 102

Divide each side by '-16'.
x = -6.375

Simplifying
x = -6.375

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