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(7x+9=9x+5)
We move all terms to the left:
(7x+9-(9x+5))=0
We calculate terms in parentheses: +(7x+9-(9x+5)), so:We get rid of parentheses
7x+9-(9x+5)
determiningTheFunctionDomain 7x-(9x+5)+9
We get rid of parentheses
7x-9x-5+9
We add all the numbers together, and all the variables
-2x+4
Back to the equation:
+(-2x+4)
-2x+4=0
We move all terms containing x to the left, all other terms to the right
-2x=-4
x=-4/-2
x=+2
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