Question

Resolva as expressões abaixo: 45-{4+[(9-12-14+7)- ( 15-5+2)]}=

(32-8:4)+(45:9+8)-6=

(8+6.8:4)+[3+15:5+5]=

20.4+3.2-15:3=

Answer 1

[(9-12-14-7)-(15-5+2)]

[(-3-14-7)-(10+2)]

[(-17-7)-(+12)]

[(-24)-(+12)]

[-24+12]

-12

(32-8:4)+(45:9+8)-6

(24:4)+(5+8)-6

6+13-6

19-6

13

(8+6.8:4)+[3+15:5+5]

(14.8:4)+[3+15:5+5]

(112:4)+[3+15:5+5]

28+[3+5+5]

28+[8+5]

28+13

41

20.4+3.2-15:3

80+3.2-15:3

80+6-15:3

80+6-5

86-5

81