HELP PLZ PLZ PLZ PLZ ( Will give brainlyist for all answers )

Answer:
1. Yes 2. No 3. Yes 4. No
Step-by-step explanation:
2. y would be 30
4. t would be 6.666666666666....
Answer:
1.yes 2.no 3.yes 4.no
Step-by-step explanation:
11=(5)+6
(18)-6=24 but does not equal 24 it equals 12
36/9 =4
15(6)=100 not 100 it equals 90