77-5x=9x+21

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Solution for 77-5x=9x+21 equation:


Simplifying
77 + -5x = 9x + 21

Reorder the terms:
77 + -5x = 21 + 9x

Solving
77 + -5x = 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.
77 + -5x + -9x = 21 + 9x + -9x

Combine like terms: -5x + -9x = -14x
77 + -14x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
77 + -14x = 21 + 0
77 + -14x = 21

Add '-77' to each side of the equation.
77 + -77 + -14x = 21 + -77

Combine like terms: 77 + -77 = 0
0 + -14x = 21 + -77
-14x = 21 + -77

Combine like terms: 21 + -77 = -56
-14x = -56

Divide each side by '-14'.
x = 4

Simplifying
x = 4

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