In Exercises 41 to 62, perform the modular arithmetic. 1. (9+15) mod 7 3. (5 +22) mod 8 2. (12+8) mod 5 4. (501) mod 15 6. (28+31) mod 4 8. (62 +21) mod 2 5. (42+35) mod 3 7. (37+45) mod 12

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