3x+21+6x+39=180

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Solution for 3x+21+6x+39=180 equation: 



3x+21+6x+39=180

We move all terms to the left:

3x+21+6x+39-(180)=0

We add all the numbers together, and all the variables

9x-120=0

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

9x=120

x=120/9

x=13+1/3

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