3x+(-4x+20)=9

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Solution for 3x+(-4x+20)=9 equation: 



3x+(-4x+20)=9

We move all terms to the left:

3x+(-4x+20)-(9)=0

We get rid of parentheses

3x-4x+20-9=0

We add all the numbers together, and all the variables

-1x+11=0

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

-x=-11

x=-11/-1

x=+11

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