Question

Va rog sa ma ajutati!!

Answer 1

Răspuns:

a)

(x + 38/15) × 3/2 = 21/4

(x + 38/15) = 21/4 : 3/2

x + 38/15 = 21/4 × 2/3

x + 38/15 = 7/2

x = 7/2 - 38/15

x = (7×15 - 38×2)/30

x = (105-76)/30

x = 29/30

b)

y = 109/50 : 109/1000

y = 109/50 × 1000/109

y = 20