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1/2-x+7=21
We move all terms to the left:
1/2-x+7-(21)=0
determiningTheFunctionDomain -x+7-21+1/2=0
We add all the numbers together, and all the variables
-1x-14+1/2=0
We multiply all the terms by the denominator
-1x*2+1-14*2=0
We add all the numbers together, and all the variables
-1x*2-27=0
Wy multiply elements
-2x-27=0
We move all terms containing x to the left, all other terms to the right
-2x=27
x=27/-2
x=-13+1/2
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