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7.5=x+1.20
We move all terms to the left:
7.5-(x+1.20)=0
We add all the numbers together, and all the variables
-(x+1.2)+7.5=0
We get rid of parentheses
-x-1.2+7.5=0
We add all the numbers together, and all the variables
-1x+6.3=0
We move all terms containing x to the left, all other terms to the right
-x=-6.3
x=-6.3/-1
x=6+0.3/1
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