3(-1)+2.5y=4.5

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Solution for 3(-1)+2.5y=4.5 equation: 



3(-1)+2.5y=4.5

We move all terms to the left:

3(-1)+2.5y-(4.5)=0

We add all the numbers together, and all the variables

2.5y-7.5=0

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

2.5y=7.5

y=7.5/2.5

y=3

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