Question

12. Nine more than y is twenty one.​

Answer 1

Answer

y=12

Step-by-step explanation:

y+9=21   (this would be the formula)

 -9   -9   (you want to eliminate 9 from the equation, so subtract it from both sides of the equation)

y=12        (after subtracting 9 from both sides you are left with 12)

Check it

12+9=21  (is this true?)

21=21 (yes it is true, therefore y=12)

Answer 2

Answer:

y+9=21

Step-by-step explanation:

9 more than y equals 21.