8x+12x=100

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Solution for 8x+12x=100 equation: 


Simplifying
8x + 12x = 100

Combine like terms: 8x + 12x = 20x
20x = 100

Solving
20x = 100

Solving for variable 'x'.

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

Divide each side by '20'.
x = 5

Simplifying
x = 5

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