-3y=4.2

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Solution for -3y=4.2 equation: 



-3y=4.2

We move all terms to the left:

-3y-(4.2)=0

We add all the numbers together, and all the variables

-3y-4.2=0

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

-3y=4.2

y=4.2/-3

y=-1+1/2.5

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