8(5+x)=80

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Solution for 8(5+x)=80 equation: 


Simplifying
8(5 + x) = 80
(5 * 8 + x * 8) = 80
(40 + 8x) = 80

Solving
40 + 8x = 80

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + 8x = 80 + -40

Combine like terms: 40 + -40 = 0
0 + 8x = 80 + -40
8x = 80 + -40

Combine like terms: 80 + -40 = 40
8x = 40

Divide each side by '8'.
x = 5

Simplifying
x = 5

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