👤

Faceti ex. 9 va rog!!

Faceti Ex 9 Va Rog class=

Răspuns :

a) ( - 9 - 40)/432 × (- 27/7) - 1/4 = (- 49/432) × (-27/7) - 1/4=
= 7/16 - 1/4 = 7/16 - 4/16 = 3/16

b) (-4×4  + 5×3)/84 × (-14) - (-7/2) × ( -9/42 + 1/42) =
= 1/84 × 14 - 7/2 × 8/42 = 1/6 - 2/3 = 1/6 - 4/6 = -3/6 = -1/2