Question

resolva as expressões
12•3+15:5=
(40-25):3+7•5=
(12-5)•(12+5)-17=
[20:(72-8)]•7-10=
100:(25-5)+3•10=
(((40:8)-3)•4):8=

Answer 1

Resposta:

Explicação passo-a-passo:

= 12•3+15:5

= 36+3

= 39

= (40-25):3+7•5

= 15:3 + 35

= 5 + 35

= 40

= (12-5)•(12+5)-17

= 7 . 17 - 27

= 119 - 27

= 92

= [20:(72-8)]•7-10

= [20:64].7 - 10

= [10/32].7 - 10

= [ 5/16].7 - 10

= 35/16 - 10

= (35 - 160)/10

= -125/10 (:5)/(:5)

= -25/2

= -12,5

= 100:(25-5)+3•10

= 100:20 + 30

= 5+30

= 35

(((40:8)-3)•4):8

= {[(5-3).4]:8

= (2.4):8

= 8/8

= 1