13x+7x=100

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Solution for 13x+7x=100 equation: 



13x+7x=100

We move all terms to the left:

13x+7x-(100)=0

We add all the numbers together, and all the variables

20x-100=0

We move all terms containing x to the left, all other terms to the right

20x=100

x=100/20

x=5

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