Sasha is 12 years old her sister Emma is why years younger than Sasha which expression could be used to find Emma's age, in years?
Show your work.
A. 12+y
B. 12-y
C. y-12
D. y+12
B. 12-y
Emma is younger than Sasha, so her age would be subtracted from Sasha's age.
To determine Emma's age, we can use the expression 12 - y, as stated in option C.
Explanation: Emma is younger than Sasha, so her age is subtracted from Sasha's age of 12. Hence, the correct expression is y - 12.