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-x+3.25=8.12
We move all terms to the left:
-x+3.25-(8.12)=0
We add all the numbers together, and all the variables
-1x-4.87=0
We move all terms containing x to the left, all other terms to the right
-x=4.87
x=4.87/-1
x=-4+0.87/1
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