3x+4=9x-20

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



3x+4=9x-20

We move all terms to the left:

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

We get rid of parentheses

3x-9x+20+4=0

We add all the numbers together, and all the variables

-6x+24=0

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

-6x=-24

x=-24/-6

x=+4

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