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7=5-(-d)
We move all terms to the left:
7-(5-(-d))=0
We add all the numbers together, and all the variables
-(5-(-1d))+7=0
We calculate terms in parentheses: -(5-(-1d)), so:We get rid of parentheses
5-(-1d)
determiningTheFunctionDomain -(-1d)+5
We get rid of parentheses
1d+5
We add all the numbers together, and all the variables
d+5
Back to the equation:
-(d+5)
-d-5+7=0
We add all the numbers together, and all the variables
-1d+2=0
We move all terms containing d to the left, all other terms to the right
-d=-2
d=-2/-1
d=+2
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