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30=10.5x
We move all terms to the left:
30-(10.5x)=0
We add all the numbers together, and all the variables
-(+10.5x)+30=0
We get rid of parentheses
-10.5x+30=0
We move all terms containing x to the left, all other terms to the right
-10.5x=-30
x=-30/-10.5
x=2+9/10.5
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