Question

Kaitlyn had 12a+21 marbles. she gave one third of the marbles to her friend john. how many marbles does she have left

Answer 1

33a is the answer cause 12+21=33 and you add the variable

Answer 2

She has two thirds of the marbles left after giving one third of them to John. The amount of marbles she has left is found from:

`(2)/(3)(12a+21)=8a+14`
The answer is: 8a + 14 marbles.