2.5-y=-1

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Solution for 2.5-y=-1 equation: 



2.5-y=-1

We move all terms to the left:

2.5-y-(-1)=0

We add all the numbers together, and all the variables

-1y+3.5=0

We move all terms containing y to the left, all other terms to the right

-y=-3.5

y=-3.5/-1

y=3+0.5/1

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