Odpowiedź:
zad. 1
1. [tex]\frac{9}{4}[/tex]
2. [tex]\frac{18}{5}[/tex]
3. [tex]\frac{11}{6}[/tex]
4. [tex]\frac{47}{10}[/tex]
5. [tex]\frac{3}{2}[/tex] = [tex]1\frac{1}{2}[/tex]
6. [tex]\frac{2}{3}[/tex]
7. [tex]\frac{4}{23}[/tex]
8. [tex]\frac{1}{7}[/tex]
zad. 2
1. = 4 × [tex]\frac{15}{4}[/tex] = [tex]\frac{4*15}{4}[/tex] = [tex]\frac{60}{4}[/tex] = 15
2. = [tex]\frac{2}{5}[/tex] : [tex]\frac{8}{5}[/tex] = [tex]\frac{2}{5}[/tex] × [tex]\frac{5}{8}[/tex] = [tex]\frac{2}{8}[/tex] = [tex]\frac{1}{4}[/tex]
3. = 3 × [tex]\frac{10}{3}[/tex] = [tex]\frac{30}{3}[/tex] = 10
4. = [tex]\frac{7}{2}[/tex] : [tex]\frac{21}{4}[/tex] = [tex]\frac{7}{2} : \frac{4}{21}[/tex] = [tex]\frac{2}{3}[/tex]
5. = [tex]\frac{13}{5}[/tex] × [tex]\frac{5}{1}[/tex] = 13
6. = [tex]\frac{54}{5}[/tex] × [tex]\frac{10}{9}[/tex] = [tex]\frac{6}{1}[/tex] ×[tex]\frac{2}{1}[/tex] = 12
7. = [tex]\frac{15}{2}[/tex] × [tex]\frac{2}{1}[/tex] = 15
8. = [tex]\frac{10}{3}[/tex] × [tex]\frac{6}{5}[/tex] = [tex]\frac{2}{1}[/tex] × [tex]\frac{2}{1}[/tex] = 4
zad.3
1. 75
2. 340
3. 260
proszę ;)
