Answer:
1. ≠
2. =
Step-by-step explanation:
Cross products mean you multiply the top of the first one by the bottom of the second one and compare it to multiplying the bottom of the first one by the top of the second one.
1. 7*10 is not equal to 5*15, so the answer is not equal.
2. 6*20 is equal to 8*15, so the answer is equal
