You are given information on Maggie’s brother age who is 7 years younger than 3 times the age of Maggie. Assume Maggie’s age is m so three times her age is= 3×m or 3m
To show that he is 7 years younger, you substract 7 from 3m or
3m—7
Next make an equation showing sum of their age equals to 53 or
m + (3m—7) = 53. Solve
4m —7. = 53
4m. = 60
m. = 60/4 = 15
So Maggie is 15 years old. To check if your answer is correct, substitute 15 for m in the equation and you should get 53 on both sides.
15+45–7 = 53
53 = 53
