3.5=2.1-4.0y

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Solution for 3.5=2.1-4.0y equation: 



3.5=2.1-4.0y

We move all terms to the left:

3.5-(2.1-4.0y)=0

We add all the numbers together, and all the variables

-(-4y+2.1)+3.5=0

We get rid of parentheses

4y-2.1+3.5=0

We add all the numbers together, and all the variables

4y+1.4=0

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

4y=-1.4

y=-1.4/4

y=-1/2.85714285714

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