31+9=8x

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Solution for 31+9=8x equation:


Simplifying
31 + 9 = 8x

Combine like terms: 31 + 9 = 40
40 = 8x

Solving
40 = 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.
40 + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0
40 + -8x = 0

Add '-40' to each side of the equation.
40 + -40 + -8x = 0 + -40

Combine like terms: 40 + -40 = 0
0 + -8x = 0 + -40
-8x = 0 + -40

Combine like terms: 0 + -40 = -40
-8x = -40

Divide each side by '-8'.
x = 5

Simplifying
x = 5

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