a)
[tex] \frac{3}{40} \times 16 = \frac{3}{40} \times \frac{16}{1} = \frac{3}{10} \times \frac{4}{1} = \frac{12}{10} = 1.2[/tex]
b)
[tex]6 \times \frac{13}{36} = \frac{6}{1} \times \frac{13}{36} = \frac{1}{1} \times \frac{13}{6} = \frac{13}{6} = 2 \frac{1}{6} [/tex]
c)
[tex] \frac{17}{42} \times 12 = \frac{17}{42} \times \frac{12}{1} = \frac{204}{42} = 4 \frac{36}{42} = 4 \frac{6}{7} [/tex]
d)
[tex]9 \times \frac{13}{27} = \frac{9}{1} \times \frac{13}{27} = \frac{1}{1} \times \frac{13}{3} = \frac{13}{3} = 4 \frac{1}{3} [/tex]
e)
[tex] \frac{9}{12} \times 4 = \frac{9}{12} \times \frac{4}{1} = \frac{9}{3} \times \frac{1}{1} = \frac{9}{3} = 3[/tex]
f)
[tex]18 \times \frac{5}{24} = \frac{18}{1} \times \frac{5}{24} = \frac{3}{1} \times \frac{5}{4} = \frac{15}{4} = 3 \frac{3}{4} [/tex]
Myślę że pomogłem ;)
