84=20+8x

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Solution for 84=20+8x equation:


Simplifying
84 = 20 + 8x

Solving
84 = 20 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
84 + -8x = 20 + 8x + -8x

Combine like terms: 8x + -8x = 0
84 + -8x = 20 + 0
84 + -8x = 20

Add '-84' to each side of the equation.
84 + -84 + -8x = 20 + -84

Combine like terms: 84 + -84 = 0
0 + -8x = 20 + -84
-8x = 20 + -84

Combine like terms: 20 + -84 = -64
-8x = -64

Divide each side by '-8'.
x = 8

Simplifying
x = 8

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