Answer:
60 = z
Step-by-step explanation:
15 = - 45 + z
15 + 45 = z
She spent 19.82 in all
I added them
-3/4, -1/2, -2/5
-1/2 = -0.5 = -10/20
-3/4 = -0.75 = -15/20
-2/5 = -0.4 = -8/20