77-6x=8x+21

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Solution for 77-6x=8x+21 equation:


Simplifying
77 + -6x = 8x + 21

Reorder the terms:
77 + -6x = 21 + 8x

Solving
77 + -6x = 21 + 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.
77 + -6x + -8x = 21 + 8x + -8x

Combine like terms: -6x + -8x = -14x
77 + -14x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 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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