Question

[ミ★๖ۣۜLυηα๖ۣۜ⁰⁵/¹²★彡]

| 0 | + | 45 | +( - | - 455 ) | + | - 796 |

- | - 33 | + ( - 12 ) + 18 + | 45 - 40 | - 57

| 40 - 37 | - | 13 - 52 |

Làm nhanh mk k !

Answer 1

[KAl(SO4)2·12H2O]

|0| + |45| + (-|-455)| + |-796|

= 0 + 45 - 455 + 796

= 386

-|-33 | + (-12) + 18 + |45 - 40| - 57

= -33 - 12 + 18 + 5 - 57

= -79

|40 - 37| - |13 - 52|

= |3| - |-39|

= 3 - 39

= -36