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 get rid of parentheses

7x+4x-20-13=0

We add all the numbers together, and all the variables

11x-33=0

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

11x=33

x=33/11

x=3

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