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2 years ago

12. Nine more than y is twenty one.

Mathematics

2 answers:

Pavel [41]2 years ago

6 0

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)

<em>Check it</em>

12+9=21 (is this true?)

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

Anettt [7]2 years ago

4 0

Answer:

y+9=21

Step-by-step explanation:

9 more than y equals 21.

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2 years ago

12. Nine more than y is twenty one.​

12. Nine more than y is twenty one.