Question

VA ROG ! DAU COROANA !
Calculeaza valorile lui a : 1 supra 6 + A = 5 supra 6 ; A - 1 supra 4 = 3 supra 4 ; 7 supra 9 - A = 2 supra 6

Answer 1

Răspuns:

1/6+a=5/6

a=5/6-1/6

a=4/6=2/3

________

a-1/4=3/4

a=3/4+1/4

a=4/4=1

__________

7/9-a=2/6

-a=2/6-7/9

-a=6/18-14/18

a=8/18=4/9