3x-30+4x=80

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Solution for 3x-30+4x=80 equation: 



3x-30+4x=80

We move all terms to the left:

3x-30+4x-(80)=0

We add all the numbers together, and all the variables

7x-110=0

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

7x=110

x=110/7

x=15+5/7

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