Question 1114294
j = jenna's age.
s = her sister's age.


j + s = 32


j = s + 4


replace j with s + 4 to get s + 4 + s = 32


combine like terms to get 2s + 4 = 32


solve for s to get s = (32-4)/2 = 14


her sister's age is 14.


jenna is 4 years older, so jenna is 18.


the sum of their ages is 18 + 14 = 32


solution looks good.


jenna is 18 years old and her sister is 14 years old.


you were asked to find out how old jenna is.


that's 18.