7x-3x=12+16

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Solution for 7x-3x=12+16 equation: 



7x-3x=12+16

We move all terms to the left:

7x-3x-(12+16)=0

We add all the numbers together, and all the variables

7x-3x-28=0

We add all the numbers together, and all the variables

4x-28=0

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

4x=28

x=28/4

x=7

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