Question

Por favor responda com os calculos


a)-8/11-5/3

b)49/7 + (-18/3)

c)(-4,6)×(0,7)

d)(-45/49)×(48/18)

e)19/3×33/7

f)8,7×5/4

g)11,05×(-4)

h)(-36/15)×(-50/12)​

Answer 1

Resposta:

Explicação passo-a-passo:

a)-8/11-5/3

= - 8/11 - 5/3

Mmc = 3,11 = 33

= [3.(-8) - 11.5]/33

= [- 24 - 55]/33

= - 79/33

b)49/7 + (-18/3)

= 7 - 6

= 1

c)(-4,6)×(0,7)

= - 46/10 . 7/10

= - 23/5 . 7/10

= - 161/50

d)(-45/49)×(48/18) (:6)/(:6)

= - 45/49 . 8/3

= - 45/3 . 8/49

= - 15 . 8/49

= - 120/49

e)19/3×33/7

= 33/3 . 19/7

= 11.19/7

= 209/7

f)8,7×5/4

= 87/10 . 5/4

= 5/10 (:5)/(:5) . 87/4

= 1/2 . 87/4

= 87/8

g)11,05×(-4)

= - 1105/100 . 4

= - 1105 . 4/100 (:4)/(:4)

= - 1105 . 1/25

= - 1105/25 (:5)/(:5)

= - 221/5

h)(-36/15)×(-50/12)​

= - 36/15 . (-50/12)

= + 36/12 . 50/15 (:5)/(:5)

= 3 . 10/3

= 3/3 . 10

= 10