can someone help me solve this pls with work

Answer Monday
1) x = 7
2) t = 75
Answer Tuesday
1) n = 30
2) x = 3
Step-by-step explanation Monday:
For #1, you add 16 + 12 to get 28. Then you find out what times 4 = 28, and that's 7.
For #2 you subtract 17-2 to get 15. Then find out what times 1/5 = 15 and that's 75.
Step-by-step explanation Tuesday:
For #1, you subtract 10-7 to get 3, then find out what divided by 10 = 3 witch is 30.
For #2 you subtract 10-4 to get 6 and find out what times 2 equals 6 witch is 3.