Answer:
Step-by-step explanation:
Try proportions. It can help since it's asking for the "cost". Hope this helps! :)
Answer:
2/21
Step-by-step explanation:
17/21 -(3/7 + 2/7)
First you add
=17/21 - (5/7)
Then you want to subtract
=2/21
Answer:
-1/8 <----- FRACTION
Step-by-step explanation: