77-4x=10x+21

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Solution for 77-4x=10x+21 equation:


Simplifying
77 + -4x = 10x + 21

Reorder the terms:
77 + -4x = 21 + 10x

Solving
77 + -4x = 21 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
77 + -4x + -10x = 21 + 10x + -10x

Combine like terms: -4x + -10x = -14x
77 + -14x = 21 + 10x + -10x

Combine like terms: 10x + -10x = 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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