Explicație pas cu pas:
[tex] \frac{4}{12} = \frac{4 \times 1}{4 \times 3} = \frac{1}{3} [/tex]
practic le împarți la cel mai mare divizor comun până când nu mai poți
[tex] \frac{18}{24} = \frac{6 \times 3}{6 \times 4} = \frac{3}{4} [/tex]
[tex] \frac{36}{42} = \frac{6 \times 6}{6 \times 7} = \frac{6}{7} [/tex]
[tex] \frac{20}{30} = \frac{2 \times 10}{3 \times 10} = \frac{2}{3} \\ \\ \frac{28}{35} = \frac{7 \times 4}{7 \times 5} = \frac{4}{5} [/tex]
[tex]4 \frac{30}{45} = 4 \frac{15 \times 2}{15 \times 3} = 4 \frac{2}{3} = \frac{14}{3} [/tex]
[tex]2 \frac{44}{66} = 2 \frac{22 \times 2}{22 \times 3} = 2 \frac{2}{3} = \frac{8}{3} [/tex]
[tex]1 \frac{52}{78} = 1 \frac{26}{39} = \frac{39 + 26}{39} = \frac{65}{39} [/tex]
