6. The sum of Corol and her daughter Marsha's age is 64. The difference
in their ages is 28. How old is each person?
iseach

Corol´s age: 18 years

Marsha´s age: 46 years

Step-by-step 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

the first one, all those points on the line just make a strait line.