7+x+x+1=30

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Solution for 7+x+x+1=30 equation: 



7+x+x+1=30

We move all terms to the left:

7+x+x+1-(30)=0

We add all the numbers together, and all the variables

2x-22=0

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

2x=22

x=22/2

x=11

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