7x-(13+4x)=20

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Solution for 7x-(13+4x)=20 equation: 



7x-(13+4x)=20

We move all terms to the left:

7x-(13+4x)-(20)=0

We add all the numbers together, and all the variables

7x-(4x+13)-20=0

We get rid of parentheses

7x-4x-13-20=0

We add all the numbers together, and all the variables

3x-33=0

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

3x=33

x=33/3

x=11

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