4x-4=80

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Solution for 4x-4=80 equation: 


Simplifying
4x + -4 = 80

Reorder the terms:
-4 + 4x = 80

Solving
-4 + 4x = 80

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 4x = 80 + 4

Combine like terms: -4 + 4 = 0
0 + 4x = 80 + 4
4x = 80 + 4

Combine like terms: 80 + 4 = 84
4x = 84

Divide each side by '4'.
x = 21

Simplifying
x = 21

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