12+3x+1+4x-3=80

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Solution for 12+3x+1+4x-3=80 equation: 



12+3x+1+4x-3=80

We move all terms to the left:

12+3x+1+4x-3-(80)=0

We add all the numbers together, and all the variables

7x-70=0

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

7x=70

x=70/7

x=10

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