Answer:
I dont understand what you are saying, is there a picture
Step-by-step explanation:
B
-2 +
17/20
3/5+1/4=12/20+5/20 (you want to find a common denominater, so its easier to add up.)
12/20+5/20=17/20, so Carla has finished washing 17/20 of her laundry.