6x+7x-20=80-7x

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Solution for 6x+7x-20=80-7x equation: 



6x+7x-20=80-7x

We move all terms to the left:

6x+7x-20-(80-7x)=0

We add all the numbers together, and all the variables

6x+7x-(-7x+80)-20=0

We add all the numbers together, and all the variables

13x-(-7x+80)-20=0

We get rid of parentheses

13x+7x-80-20=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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