(18+x)4=688

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Solution for (18+x)4=688 equation: 



(18+x)4=688

We move all terms to the left:

(18+x)4-(688)=0

We add all the numbers together, and all the variables

(x+18)4-688=0

We multiply parentheses

4x+72-688=0

We add all the numbers together, and all the variables

4x-616=0

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

4x=616

x=616/4

x=154

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