(7w+9)+9=7w+(9+9)=7w+18

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Solution for (7w+9)+9=7w+(9+9)=7w+18 equation: 



(7w+9)+9=7w+(9+9)=7w+18

We move all terms to the left:

(7w+9)+9-(7w+(9+9))=0

We add all the numbers together, and all the variables

(7w+9)-(7w+18)+9=0

We get rid of parentheses

7w-7w+9-18+9=0

We add all the numbers together, and all the variables

=0

w=0/1

w=0

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