4x-9=-20-7x

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Solution for 4x-9=-20-7x equation: 



4x-9=-20-7x

We move all terms to the left:

4x-9-(-20-7x)=0

We add all the numbers together, and all the variables

4x-(-7x-20)-9=0

We get rid of parentheses

4x+7x+20-9=0

We add all the numbers together, and all the variables

11x+11=0

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

11x=-11

x=-11/11

x=-1

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