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-2=x/2.5+1
We move all terms to the left:
-2-(x/2.5+1)=0
We get rid of parentheses
-x/2.5-1-2=0
We multiply all the terms by the denominator
-x-1*2.5-2*2.5=0
We add all the numbers together, and all the variables
-1x-7.5=0
We move all terms containing x to the left, all other terms to the right
-x=7.5
x=7.5/-1
x=-7+0.5/1
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