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90=43+(x+3)
We move all terms to the left:
90-(43+(x+3))=0
We calculate terms in parentheses: -(43+(x+3)), so:We get rid of parentheses
43+(x+3)
determiningTheFunctionDomain (x+3)+43
We get rid of parentheses
x+3+43
We add all the numbers together, and all the variables
x+46
Back to the equation:
-(x+46)
-x-46+90=0
We add all the numbers together, and all the variables
-1x+44=0
We move all terms containing x to the left, all other terms to the right
-x=-44
x=-44/-1
x=+44
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