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11.03=8.78+.02x.x=
We move all terms to the left:
11.03-(8.78+.02x.x)=0
We add all the numbers together, and all the variables
-(.02x.x+8.78)+11.03=0
We get rid of parentheses
-.02x.x-8.78+11.03=0
We add all the numbers together, and all the variables
-.02x.x+2.25=0
We move all terms containing x to the left, all other terms to the right
-.02x.x=-2.25
x=-2.25/1
x=-2.25
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