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(-18/2.25)-9.25=a
We move all terms to the left:
(-18/2.25)-9.25-(a)=0
We add all the numbers together, and all the variables
-a-9.25+(-8)=0
We add all the numbers together, and all the variables
-1a-17.25=0
We move all terms containing a to the left, all other terms to the right
-a=17.25
a=17.25/-1
a=-17+0.25/1
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