820-400=8x

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Solution for 820-400=8x equation:


Simplifying
820 + -400 = 8x

Combine like terms: 820 + -400 = 420
420 = 8x

Solving
420 = 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.
420 + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0
420 + -8x = 0

Add '-420' to each side of the equation.
420 + -420 + -8x = 0 + -420

Combine like terms: 420 + -420 = 0
0 + -8x = 0 + -420
-8x = 0 + -420

Combine like terms: 0 + -420 = -420
-8x = -420

Divide each side by '-8'.
x = 52.5

Simplifying
x = 52.5

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