All you do is divide -12/20 by 4/4 which is -3/5
60% if there are only 10 white and black balls
Answer:

Step-by-step explanation:
please mark me brainliest
Answer:
Make x 0 and y 3
Step-by-step explanation:
0 multiplied by 2 is 0
-3 multiplied by 3 is -9
0-9 = -9