Mary’s dad is 3 years less than double her age. the difference in their age is 31.

Mary is 34 years old, and Dad is 34 + 31, or 65, years old.

Step-by-step explanation:

Represent the ages of Dad and Mary by d and m respectively.

Write and solve a system of linear equations as follows:

d = 2m - 3

d - m = 31

Substituting 2m - 3 for d in the second equation, we get:

2m - 3 - m = 31

Combining like terms results in

m = 34.  Mary is 34 years old, and Dad is 34 + 31, or 65, years old.

black/brown

step-by-step explanation:

well, you see here, jamal was born to 2 parents, his mother who he lives with and his father who left at a young age and who happens to be younger than him. he stole cookies because he has to steal food due to the fact that he spends his government poverty checks on pot and women.

people grow faster than other people.

step-by-step explanation:

should you really be posting this isn't math boi.