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9.7-0.5x=8.7
We move all terms to the left:
9.7-0.5x-(8.7)=0
We add all the numbers together, and all the variables
-0.5x+1=0
We move all terms containing x to the left, all other terms to the right
-0.5x=-1
x=-1/-0.5
x=+2
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