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2.5x-0.25x=-3
We move all terms to the left:
2.5x-0.25x-(-3)=0
We add all the numbers together, and all the variables
2.25x+3=0
We move all terms containing x to the left, all other terms to the right
2.25x=-3
x=-3/2.25
x=-1+0.75/2.25
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