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-9=-6.5+n
We move all terms to the left:
-9-(-6.5+n)=0
We add all the numbers together, and all the variables
-(n-6.5)-9=0
We get rid of parentheses
-n+6.5-9=0
We add all the numbers together, and all the variables
-1n-2.5=0
We move all terms containing n to the left, all other terms to the right
-n=2.5
n=2.5/-1
n=-2+0.5/1
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