90-4x=6

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Solution for 90-4x=6 equation: 


Simplifying
90 + -4x = 6

Solving
90 + -4x = 6

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + -4x = 6 + -90

Combine like terms: 90 + -90 = 0
0 + -4x = 6 + -90
-4x = 6 + -90

Combine like terms: 6 + -90 = -84
-4x = -84

Divide each side by '-4'.
x = 21

Simplifying
x = 21

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