azayahandndjdkdkd azayahandndjdkdkd 31-01-2020 Mathematics contestada 3. 1.2 x 103+ 4.5 x 106-2.5 x 103 a. 3.2 x 103 b. 4.5 X 106 c. 6.3 x 108 d. 8.2 x 103 e. 8.2 x 107