12x-4x+7x=45

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Solution for 12x-4x+7x=45 equation: 



12x-4x+7x=45

We move all terms to the left:

12x-4x+7x-(45)=0

We add all the numbers together, and all the variables

15x-45=0

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

15x=45

x=45/15

x=3

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