6x+3+9x=3+90=180

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Solution for 6x+3+9x=3+90=180 equation: 



6x+3+9x=3+90=180

We move all terms to the left:

6x+3+9x-(3+90)=0

We add all the numbers together, and all the variables

6x+9x+3-93=0

We add all the numbers together, and all the variables

15x-90=0

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

15x=90

x=90/15

x=6

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