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7.8=9.3-0.5x
We move all terms to the left:
7.8-(9.3-0.5x)=0
We add all the numbers together, and all the variables
-(-0.5x+9.3)+7.8=0
We get rid of parentheses
0.5x-9.3+7.8=0
We add all the numbers together, and all the variables
0.5x-1.5=0
We move all terms containing x to the left, all other terms to the right
0.5x=1.5
x=1.5/0.5
x=3
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