herjosep herjosep 26-08-2020 Mathematics contestada Simplify each expression using order of operations. 4. 24 + (8-5) 5. 4 + 7 X2 6. 9-9 + 22 7.8 x 3 + 6-1 8. 3 + 12 - 2 9. 4+ (3 X 6) - 3