Answer:
Step-by-step explanation:
x = brothers age
edith is 60 years less then 5 times her brothers age.....
so edith = 5x - 60
so they're twins....the same age....so set them equal to each other
x = 5x - 60
x - 5x = -60
-4x = -60
x = -60/-4
x = 15 <===== edith (and her bro) are 15 years old