Question

me ajudem pfvvvv
a)
b)
c)
d)​

Answer 1

Explicação passo-a-passo:

a)

( 1/2) + (- 2:/3) =

3/6 - 4/6 = - 1/6

b)

( - 6,41 ) - ( + 9,882) =

- 6,41 - 9,882 = - 16,292

c)

( 28/45 ) . ( - 24/14) =

28/45 :. - 12/7 =

- 336/315 = - 112/ 105 = - 16/ 15

d)

(- 2/3 ) + ( -10/21 ) =

- 14/21 - 10/21 = - 24/21 = - 8/7