12x-30+3x=180

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Solution for 12x-30+3x=180 equation: 



12x-30+3x=180

We move all terms to the left:

12x-30+3x-(180)=0

We add all the numbers together, and all the variables

15x-210=0

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

15x=210

x=210/15

x=14

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