Question

1 ) -7 + ( -5 + 4 ) =

2 ) -5 + 3 - ( 5 - 9 ) + ( 8 - 1 ) - 11 =


me ajudem ai

Answer 1

Resposta:

1) -7 + ( -5 + 4 ) = -7 + ( -1 ) = -7 - 1 = -8

2) -5 + 3 - ( 5 - 9 ) + ( 8 - 1 ) - 11 = -2 - ( -4 ) + ( 7 ) - 11 = -2 + 4 + 7 - 11 = -2