Question

Calculați:

a) (1/3 + 1/3 × 0,75) ÷ (-18/30);

b) [ 1/2 + 0,5 × 1,1(6)] × 0,(27).

Multumesc frumos. ​

Answer 1

a)(1/3+1/3×0,75):(-18/30)

(1/3+1/3×3/4):(-18/30)

(1/3+1/4):(-18/30)

7/12:(-18/30)

-7/12×30/18

-7/12×30/18

-7/12×5/3

-35/36 ✔

b)[1/2+0,5×1,1(6)]×0,(27)

(1/2+0,5×7/6)×3

(1/2+1/2×7/6)×3

(1/2+7/12)×3

13/12×3

13/4 ✔