Question

Algm me ajuda? POR FAVORRRRRR

Answer 1

*Lembrando que a regra de operação é:
1° Parenteses;2°Chave;3°Colchete


1)7+(2+3)
7+5
12= X
Resp. X

2)(3+5)-1
8-1
7= X
Resp. X

3)20+(6+4)
20+10
30= 1
Resp. 1

4)4+[1+(3+2)]
4+[1+5]
4+6
10= 2
Resp. 2

5)8-[6+(2-1)]
8-[6+1]
8-7
1= 2
Resp. 2

6)[12-(4+1)]+8
[12-5]+8
7+8
15= X
Resp. X

7)16+[5+(2+3)]
16+[5+5]
16+10
26= 2
Resp. 2

8){6+[3+(1+2)]}+1
{6+[3+3]}+1
{6+6}+1
12+1
13= 1
Resp. 1

9)8+{[5+(3+3)]-1}
8+{[5+6]-1}
8+{11-1}
8+10
18= X
Resp. X

10)6+[(3+3+3)+1]
6+[9+1]
6+10
16=X
Resp. X

11)[4+(3+1)+(2-1)]-1
[4+4+1]-1
[8+1]-1
9-1
8= 1
Resp. 1


12) 12+{[(1+6)-1]-1}
12+{[7-1]-1}
12+{6-1}
12+5
17= 2
Resp. 2