Răspuns :
x / 5 = 7 / 2 <=> x = ( 7 x 5 ) / 2 <=> x = 35 / 2 ;
4 / x = 9 / 5 <=> x = ( 4 x 5 ) / 9 <=> x = 20 / 9 ;
Bafta!
4 / x = 9 / 5 <=> x = ( 4 x 5 ) / 9 <=> x = 20 / 9 ;
Bafta!