80-4x=40

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Solution for 80-4x=40 equation: 


Simplifying
80 + -4x = 40

Solving
80 + -4x = 40

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + -4x = 40 + -80

Combine like terms: 80 + -80 = 0
0 + -4x = 40 + -80
-4x = 40 + -80

Combine like terms: 40 + -80 = -40
-4x = -40

Divide each side by '-4'.
x = 10

Simplifying
x = 10

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