4.2=y+2.1

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Solution for 4.2=y+2.1 equation: 



4.2=y+2.1

We move all terms to the left:

4.2-(y+2.1)=0

We get rid of parentheses

-y-2.1+4.2=0

We add all the numbers together, and all the variables

-1y+2.1=0

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

-y=-2.1

y=-2.1/-1

y=2+0.1/1

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