sum of ages of mother and daughter is 32 years.Daughter is a year old.In how many years will mother be 4 times daughters age(use one variable only)

Answer 1

31+x = 4(1+x)

Answer 2

x=4

Answer 3

31+x=4(1+x)
32=(4)(2)
32=8
32/8 = 8/8
x=4