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100=15x+38.50
We move all terms to the left:
100-(15x+38.50)=0
We add all the numbers together, and all the variables
-(15x+38.5)+100=0
We get rid of parentheses
-15x-38.5+100=0
We add all the numbers together, and all the variables
-15x+61.5=0
We move all terms containing x to the left, all other terms to the right
-15x=-61.5
x=-61.5/-15
x=4+1/10
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