Question

1) Resolva as expressões abaixo:
a) [2.(5+1.2)] - 4

b) 1+{4-[5.2-4+ (2:1+1)] +9}

ME AJUDEM ​

Answer 1

Resposta:

a) 10

b) 6

Explicação passo-a-passo:

a) [2×(5+1×2)]-4

[2×(5+2)]-4

[2x7]-4

14-4

10

b) 1+{4-[5×2-4+(2÷1+1)]+9}

1+{4-[5×2-4+(1+1)]+9}

1+{4-[5×2-4+2]+9}

1+{4-[10-4+2]+9}

1+{4-[6+2]+9}

1+{4-8+9}

1+{-4+9}

1+5

6