1.4-y=3.9

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Solution for 1.4-y=3.9 equation: 



1.4-y=3.9

We move all terms to the left:

1.4-y-(3.9)=0

We add all the numbers together, and all the variables

-1y-2.5=0

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

-y=2.5

y=2.5/-1

y=-2+0.5/1

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