Answer: Sally baked 11 cakes
Explanation:
Alright, so you should go about solving this by setting up two equations. We will use b to represent Brad and s to represent Sally:
b+s=27
b=s+5 (because Brad made 5 more cakes than sally)
Solve using systems of equations. I will show the substitution method because it is faster in this scenario:
(s+5)+s=27
Solve for s:
s+5+s=27
2s=22
s=11
So Sally baked 11 cakes, which makes sense because that means that Brad baked 16