Maggie's brother is three years younger than twice her age. The sum of their ages is 24 how old is maggie?

The variable for Maggie will be M and 2x-3 be her younger brothers age (Twice her age). We then would turn this into an algebraic problem. (m+2x - 3=24).

3x-3=24, we would add 3 to both sides (-3 and 24). 24 + 3 equals 27, we now have to divide - 3x and 27 on both sides, which equals 9. (x=9)