-7.8=y-4.2

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Solution for -7.8=y-4.2 equation: 



-7.8=y-4.2

We move all terms to the left:

-7.8-(y-4.2)=0

We get rid of parentheses

-y+4.2-7.8=0

We add all the numbers together, and all the variables

-1y-3.6=0

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

-y=3.6

y=3.6/-1

y=-3+0.6/1

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