13x+7x=420

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Solution for 13x+7x=420 equation: 


Simplifying
13x + 7x = 420

Combine like terms: 13x + 7x = 20x
20x = 420

Solving
20x = 420

Solving for variable 'x'.

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

Divide each side by '20'.
x = 21

Simplifying
x = 21

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