Question

(5/6+3/4) ori 24/19. b) (1/6+7/9) ori 18/17

Answer 1

5/6 se amplifica cu 2, 3/4 se apmplifica cu 3, 10/12+9/12= 19/12
19/12x24/12=2/1=2
1/6 se amplifica cu 3, 7/9 se amplifica cu 2, 3/18+14/18=17/18
17/18x18/17=1

Answer 2

( 5/6 + 3/4 ) x 24/19 = ( 10/12 + 9/12 ) x 24/19 = 19/12 x 24/19 = 2
( 1/6 + 7/9 ) x 18/17 = ( 3/18 + 14/18 ) x 18/17 = 17/18 x 18/17 = 1