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0=300x+300-(200x+550)
We move all terms to the left:
0-(300x+300-(200x+550))=0
We add all the numbers together, and all the variables
-(300x+300-(200x+550))=0
We calculate terms in parentheses: -(300x+300-(200x+550)), so:We get rid of parentheses
300x+300-(200x+550)
determiningTheFunctionDomain 300x-(200x+550)+300
We get rid of parentheses
300x-200x-550+300
We add all the numbers together, and all the variables
100x-250
Back to the equation:
-(100x-250)
-100x+250=0
We move all terms containing x to the left, all other terms to the right
-100x=-250
x=-250/-100
x=2+1/2
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