Răspuns :
21/6-b=5/24
b=21/6-5/24
aducem la acelasi numitor comun( 24)
avem
b=84/24-5/24
b=79/24 (scazatorul)
verificare:
21/6-79/24=5/24
aducem la scelasi numitor comun(24)
avem
81/24-79/24=5/24
b=21/6-5/24
aducem la acelasi numitor comun( 24)
avem
b=84/24-5/24
b=79/24 (scazatorul)
verificare:
21/6-79/24=5/24
aducem la scelasi numitor comun(24)
avem
81/24-79/24=5/24
a-b =5/24
a =21/6
21/6 -b =5/24 numitor 24
84-24b =5
24b =84-5 =79
b =79/24
a =21/6
21/6 -b =5/24 numitor 24
84-24b =5
24b =84-5 =79
b =79/24