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28 votes
28 votes
Solve 19.9 = 9y - 8. y =

User Niyoko
by
2.1k points

2 Answers

22 votes
22 votes

Answer: y = 3.1

Step-by-step explanation: We want to isolate the y.

First, we want to get rid of the -8 so we add 8 (this makes zero) What we do to one side we must do to the other so we add 8 to the 19.9 which gets us 27.9.

Our equation is now 27.9 = 9y. We still want to isolate the y. The 9y means 9 times y so to get rid of the 9 on that side we have to divide both sides by 9. Leaving us with y = 3.1

User Shamell
by
3.5k points
22 votes
22 votes


19.9=9y-8

Step 1: Flip the equation:


9y-8=19.9

Step 2: Add 8 to both sides:


9y-8+8=19.9+8


9y=27.9

Step 3: Divide both sides by 9:


(9y)/(9) =(27.9)/(9)


\fbox{y=3.1}

Hope this helps!

User Brandon Stillitano
by
2.9k points