-3(y+2,5)=6,9-4,2y

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Solution for -3(y+2,5)=6,9-4,2y equation: 



-3(y+2.5)=6.9-4.2y

We move all terms to the left:

-3(y+2.5)-(6.9-4.2y)=0

We add all the numbers together, and all the variables

-3(y+2.5)-(-4.2y+6.9)=0

We multiply parentheses

-3y-(-4.2y+6.9)-7.5=0

We get rid of parentheses

-3y+4.2y-6.9-7.5=0

We add all the numbers together, and all the variables

1.2y-14.4=0

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

1.2y=14.4

y=14.4/1.2

y=12+1.7763568394003E-15/1.2

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