PLS. HELP ME TO ANSWER THIS THANK YOU IN ADVANCE

Answer:
1. 411
2. 157
3. 193
4. 36
5. -134
Step-by-step explanation:
1. 89 + 121 = 210 + 201 = 411
2. 421 - 136 = 285 -128 = 157
3. 146 + 112 = 258 -65= 193
4. 55 + (-38) = 17-(-19)= 36
5. 36 + (-78) = -42+(-92)= -134
Answer:
1. 411
89
+ 121
+ 201
-----------
411
2. 157
421
- 136
- 128
-----------
157
3. 193
146
+ 112
+ 65
-----------
193
4. -2
55
+ (-38)
- (-19)
------------
-2
5. -134
36
+ (-78)
+ (-92)
-----------
-134
[Not sure for 4 and 5 hope this helps]