Resolva as expressões núméricas: a) – 5 + (– 3 + 7 – 9) – ( + 13 – 10) b) 21 – ( + 9 –
Resolva as expressões núméricas: a) – 5 + (– 3 + 7 – 9) – ( + 13 – 10) b) 21 – ( + 9 – 8) + (– 5) + ( 6 – 3 – 7)
1 Resposta
A) – 5 + (– 3 + 7 – 9) – ( + 13 – 10) = x + 5
B) 21 – ( + 9 – 8) + (– 5) + ( 6 – 3 – 7) = 11
Explicação passo-a-passo: