Answer:
30%
Step-by-step explanation:
If Justin has a 20% chance and Cam has a 50% chance that adds up to 70%
But you need to get to 100% so all you do is
70 - 100 = 30
30%
Answer:

Step-by-step explanation:
remember the property

then u get equation with same base
Distribute and combine like-terms!
-4x + 12x - 2x - 2
6x - 2