0.3y+0.8(13-y)=7.4

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Solution for 0.3y+0.8(13-y)=7.4 equation: 



0.3y+0.8(13-y)=7.4

We move all terms to the left:

0.3y+0.8(13-y)-(7.4)=0

We add all the numbers together, and all the variables

0.3y+0.8(-1y+13)-(7.4)=0

We add all the numbers together, and all the variables

0.3y+0.8(-1y+13)-7.4=0

We multiply parentheses

0.3y-0.8y+10.4-7.4=0

We add all the numbers together, and all the variables

-0.5y+3=0

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

-0.5y=-3

y=-3/-0.5

y=+6

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