oblicz dodawanie ułamków zwykłych 1/5/8+9/5/8+1/7/8= 8/3/10+4/3/10+7/10= 7/15+3/8/15+5/11/15= prosze

1 i 5/8+9 i 5/8+1 i 7/8=  = 11 i 17/8= = 13 i 1/8 8 i 3/10+4 i 3/10+7/10= = 12 i 13/10 = = 13 i 3/10 7/15+3 i 8/15+5 i 11/15= = 8 i 26/15= = 9 i 11/15