x+3x-12=4x+20*

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Solution for x+3x-12=4x+20* equation: 



x+3x-12=4x+20*

We move all terms to the left:

x+3x-12-(4x+20*)=0

We add all the numbers together, and all the variables

x+3x-(+4x)-12=0

We add all the numbers together, and all the variables

4x-(+4x)-12=0

We get rid of parentheses

4x-4x-12=0

We add all the numbers together, and all the variables

-12!=0

There is no solution for this equation

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