maria gave two fifths of her stickers to susan but still had 18 left.

Question

how many did she give susan.

thats my homework question and i don't understand how i find out the answer

Answer 1

5/5 - 2/5 = 3/5

3/5x = 18

x = 18/(3/5)

x = 18 * (5/3)

x = 90/3 = 30

2/5 * 30 = 60/5 = 12 stamps she gave Susan

Answer 2

Hello Sue, why does the fraction change to 5/3 from 3/4 and why does the calculation change / to * ?
Easier would be at the end
30-18=12

Thank you.

Kind Regards

Answer 3

Meant change to 5/3 from 3/5?