3x+4x-12=20

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Solution for 3x+4x-12=20 equation: 



3x+4x-12=20

We move all terms to the left:

3x+4x-12-(20)=0

We add all the numbers together, and all the variables

7x-32=0

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

7x=32

x=32/7

x=4+4/7

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