Răspuns :
2 intregi 7/10 = (2•10+7)/10 = 27/10
1 intreg 3/8 = (1•8+3)/8 = 11/8
Ca sa le poti compara trebuie sa le aduci la acelasi numitor.
27/10 - 11/8 =
Numitor comun 40
(27•4)/40 - (11•5)/40 =
108/40 - 55/40 =
53/40
1 intreg 3/8 = (1•8+3)/8 = 11/8
Ca sa le poti compara trebuie sa le aduci la acelasi numitor.
27/10 - 11/8 =
Numitor comun 40
(27•4)/40 - (11•5)/40 =
108/40 - 55/40 =
53/40
2 intregi si 7/10 = ( 2x10+7)/10=27/10
1 intreg si 3/8 = ( 1x8+3)/8= 11/8
10=2x5
8=2³
cmmmc (10,8)= 2³x5=40
(4x27) /40 = 108/40
(5x11) /40 =55/40
108/40 - 55/40=53/40= 1 intreg si 13/40 sau = 1, 325
1 intreg si 3/8 = ( 1x8+3)/8= 11/8
10=2x5
8=2³
cmmmc (10,8)= 2³x5=40
(4x27) /40 = 108/40
(5x11) /40 =55/40
108/40 - 55/40=53/40= 1 intreg si 13/40 sau = 1, 325