Answer:
Corol´s age: 18 years
Marsha´s age: 46 years
Explanation:
c + m = 64 first equation
c - m = 28 second equation
c = Corol´s age
m = Mardha´s age
first equation:
c = 64 - m
second equatión:
(64-m) - m = 28
64 - 28 = m + m
36 = 2m
m = 36/2
m = 18
c = 64 - m
c = 64 - 18
c = 46
Check:
46 + 18 = 64
46 - 18 = 28