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18-(-2b)=46
We move all terms to the left:
18-(-2b)-(46)=0
We add all the numbers together, and all the variables
-(-2b)-28=0
We get rid of parentheses
2b-28=0
We move all terms containing b to the left, all other terms to the right
2b=28
b=28/2
b=14
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