3i2/3+4i5/6=11/3+29/6=22/6+29/6=51/6=8i3/6=8i1/2 b. 7i1/2-3i3/4=15/2-15/4=30/4-15/4=15/4=3i3/4 c. 1i2/5:2i4/5=7/5:14/5=7/5*5/14=1/2 2. a. 4/5do2=16/25 3.a. 11i3/10+a=16i1/5 a=16i1/5-11i3/10 a=80/5-114/10 a=160/10-114/10 a=46/10 a=4i6/10 a=4i3/5 b. y:3i1/5=4i3/5 y=4i3/5*3i1/5 y=15/5*16/5 y=48/5 y=9i3/5
zad1 a)[latex]3 frac{2}{3}+4 frac{5}{6}=3 frac{4}{6}+4 frac{5}{6}=7 frac{9}{6}=8 frac{3}{6}=8 frac{1}{2} [/latex] b)[latex]7 frac{1}{2}-3 frac{3}{4}=7 frac{2}{4}-3 frac{3}{4}=3 frac{3}{4} [/latex] c)[latex]1 frac{2}{5}:2 frac{4}{5}= frac{7}{5}: frac{14}{5}= frac{7}{5}* frac{5}{14}= frac{1}{2} [/latex] zad2 a)([latex] frac{4}{5})^2= frac{4}{5}* frac{4}{5}= frac{16}{25} [/latex] b)(0,3)³=0,3*0,3*0,3=0,027 zad3 a)[latex] 11frac{3}{10} +a=16 frac{1}{5} [/latex] 11,3+a=16,2 a=16,2-11,3 a=4,9 b)y:[latex]3 frac{1}{5} =4 frac{3}{5} [/latex] y:[latex] frac{16}{5}= frac{23}{5} [/latex] y*[latex] frac{5}{16}= frac{23}{5} [/latex] y=[latex] frac{23}{5} : frac{5}{16} [/latex] y=[latex] frac{23}{5} * frac{16}{5} [/latex] y=[latex] frac{368}{25} [/latex] y=14[latex] frac{18}{25} [/latex] zad4 a)0,8=8/10=4/5 b)1,45=1 45/100=1i9/20 c)0,875=875/1000=78 0,25=25/100=1/4=