a)
[tex] \frac{3}{4} + \frac{5}{3} = \frac{9}{12} + \frac{20}{12} = \frac{29}{12} = 2 \frac{5}{12} [/tex]
b)
[tex] \frac{3}{4} - \frac{5}{3} = \frac{9}{12} - \frac{20}{12} = - \frac{11}{12} [/tex]
c)
[tex] \frac{3}{4} \times \frac{5}{3} = \frac{1}{4} \times \frac{5}{1} = \frac{5}{4} = 1\frac{1}{4} [/tex]
d)
[tex] \frac{3}{4} \div \frac{5}{3} = \frac{3}{4} \times \frac{3}{5} = \frac{9}{20} [/tex]
e)
[tex]2 \frac{1}{5} \times 2 \frac{1}{4} = \frac{11}{5} \times \frac{9}{4} = \frac{99}{20} = 4 \frac{19}{20} [/tex]
f)
[tex]5 \frac{1}{2} \div 3\frac{1}{4} = \frac{11}{2} \div \frac{13}{4} = \frac{11}{2} \times \frac{4}{13} = \frac{11}{1} \times \frac{2}{13} = \frac{22}{13} = 1 \frac{9}{13} [/tex]
Myślę że pomogłem ;)
