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

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Solution for (7+x)-(7-x)=30 equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

2x-30=0

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

2x=30

x=30/2

x=15

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