77-2x=2x+21

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Solution for 77-2x=2x+21 equation:


Simplifying
77 + -2x = 2x + 21

Reorder the terms:
77 + -2x = 21 + 2x

Solving
77 + -2x = 21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
77 + -2x + -2x = 21 + 2x + -2x

Combine like terms: -2x + -2x = -4x
77 + -4x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
77 + -4x = 21 + 0
77 + -4x = 21

Add '-77' to each side of the equation.
77 + -77 + -4x = 21 + -77

Combine like terms: 77 + -77 = 0
0 + -4x = 21 + -77
-4x = 21 + -77

Combine like terms: 21 + -77 = -56
-4x = -56

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

Simplifying
x = 14

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