3x+(x-1)=9x+4

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Solution for 3x+(x-1)=9x+4 equation: 



3x+(x-1)=9x+4

We move all terms to the left:

3x+(x-1)-(9x+4)=0

We get rid of parentheses

3x+x-9x-1-4=0

We add all the numbers together, and all the variables

-5x-5=0

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

-5x=5

x=5/-5

x=-1

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