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(-7)-4a=25
We move all terms to the left:
(-7)-4a-(25)=0
determiningTheFunctionDomain -4a-25+(-7)=0
We add all the numbers together, and all the variables
-4a-32=0
We move all terms containing a to the left, all other terms to the right
-4a=32
a=32/-4
a=-8
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