11/30+1/6= 11/30+ 5/30= 16/30= 8/15 12 i 2/3+1 i 3/4= 12 i 8/12+ 1 i9/12= 13 i 17/12= 14 i 5/12 4/15- 4/15=0 8 i 1/8-2/3= 8 i 3/24- 16/24= 7 i 27/24- 16/24= 7 i 11/24 3/5*4/7= 12/35 4 i 4/5*3 i 3/4= 24/5*15/4( skracamy 5 i 15 przez 5, oraz 24 i 4 przez4)=6*3=18 4/9:8= 4/9*1/8( skracamy 4 i 8 przez 4)=1/9*1/2= 1/18 1 i 3/8: 6 i 3/5= 11/8: 33/5= 11/8*5/33( skracamy 11 i 33 przez 11)=1/8*5/3= 5/24
a) [latex] frac{22}{60} [/latex]+[latex] frac{10}{60} [/latex]= [latex] frac{32}{60} [/latex] = [latex] frac{17}{30} [/latex] b) 12[latex] frac{8}{12} [/latex]+ 1[latex] frac{9}{12} [/latex] = 13[latex] frac{17}{12} [/latex] = 14 [latex] frac{5}{12} [/latex] c) [latex] frac{4}{15} [/latex] - [latex] frac{4}{15} [/latex] = 0 d) 8 [latex] frac{4}{24} [/latex] - [latex] frac{16}{24} [/latex] = 7 [latex] frac{28}{24} [/latex] - [latex] frac{16}{24} [/latex] = 7[latex] frac{12}{24} [/latex] = 7[latex] frac{1}{2} [/latex] e) [latex] frac{3}{5} [/latex] · [latex] frac{4}{7} [/latex]= [latex] frac{12}{35} [/latex] f) [latex] frac{24}{5} [/latex] · [latex] frac{15}{4} [/latex] = 18 g) [latex] frac{4}{9} [/latex] ·[latex] frac{1}{8} [/latex] = [latex] frac{4}{72} [/latex] = [latex] frac{1}{18} [/latex] h) [latex] frac{11}{8} [/latex] : [latex] frac{33}{5} [/latex] = [latex] frac{11}{8} [/latex]· [latex] frac{5}{33} [/latex] = [latex] frac{5}{24} [/latex]
