Question

a) 1-[(3+2.20-4.3)-(7+9:9).4]:7=
b) [(12.2+3.4-5.6)-(8:2+9.3+1-2.4).(15+3)].10=
c) {42+[(45-19)-(18-3)+1]-(28-15)-1}=
​

Answer 1

Resposta:

a) 1

b)3240

c)40

Explicação:  
A) 1-[3+0-12-7+1.4]:7
1-9:7= 1

B)[6-24.18].10

324.10=3240

C){42+[26-15+1]-13-1}

{42+12-13-1}

40