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13=11+2(u+8)
We move all terms to the left:
13-(11+2(u+8))=0
We calculate terms in parentheses: -(11+2(u+8)), so:We get rid of parentheses
11+2(u+8)
determiningTheFunctionDomain 2(u+8)+11
We multiply parentheses
2u+16+11
We add all the numbers together, and all the variables
2u+27
Back to the equation:
-(2u+27)
-2u-27+13=0
We add all the numbers together, and all the variables
-2u-14=0
We move all terms containing u to the left, all other terms to the right
-2u=14
u=14/-2
u=-7
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