(x+3)+(x+1)=18

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Solution for (x+3)+(x+1)=18 equation: 



(x+3)+(x+1)=18

We move all terms to the left:

(x+3)+(x+1)-(18)=0

We get rid of parentheses

x+x+3+1-18=0

We add all the numbers together, and all the variables

2x-14=0

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

2x=14

x=14/2

x=7

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