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20.3=10.3-5n
We move all terms to the left:
20.3-(10.3-5n)=0
We add all the numbers together, and all the variables
-(-5n+10.3)+20.3=0
We get rid of parentheses
5n-10.3+20.3=0
We add all the numbers together, and all the variables
5n+10=0
We move all terms containing n to the left, all other terms to the right
5n=-10
n=-10/5
n=-2
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