Question

Calcule o valor das expressões. -{20-(2-10)+[-30-(70)]}

Answer 1

olá, boa noite.

-{20-(2-10)+[-30-(70)]}

-{20+8 + [-30 -70]}

-{28 - 100}

+72


att Jhonny ♥

Answer 2

-{20 - (2-10) + [-30 - (70)]}
-{20 - (-8) + [-100]}
-{20 + 8 - 100}
-{-72}
 72

Bom Domingo!