Explicație pas cu pas:
1)
[tex] \frac{1}{3} - \frac{1}{5 } = \frac{5}{15} - \frac{3}{15 } = \frac{2}{15} [/tex]
amplificare cu 5
amplificare cu 3
2)
[tex]3 \times \frac{1}{2} - \frac{3}{4} = \frac{3}{1} \times \frac{1}{2} - \frac{3}{4} = \frac{6}{2} \times \frac{1}{2} - \frac{3}{4} = \frac{6}{2} - \frac{3}{4} = \frac{12}{4} - \frac{3}{4} = \frac{9}{4} [/tex]
amplificare cu 2,1,2,1
3)
[tex]2 - \frac{5}{6} [/tex]
[tex]2 = \frac{12}{6} [/tex]
[tex] \frac{12}{6} - \frac{5}{6} = \frac{7}{6} [/tex]
4)
[tex] \frac{7}{5} - \frac{5}{4} = \frac{28}{20} - \frac{25}{20} = \frac{3}{20} [/tex]
amplificare cu 4 si cu 5
5)
[tex] \frac{13}{6} - \frac{3}{4} = \frac{52}{24} - \frac{18}{24} = \frac{34}{24} [/tex]
amplificare cu 4 si 6
6)
[tex] \frac{5}{12} - \frac{1}{18} = \frac{30}{72} - \frac{4}{72} = \frac{26}{72} [/tex]
amplificare cu 6 si 4
7)
[tex] \frac{13}{20} - \frac{7}{15} = \frac{39}{50} - \frac{28}{50} = \frac{11}{50} [/tex]
amplificare cu 3 si 4
8)
[tex] \frac{5}{16} - \frac{7}{24} = \frac{120}{384} - \frac{112}{384} = \frac{8}{384} [/tex]
amplificare cu 24 si 16
9)
[tex] \frac{1}{48} - \frac{1}{72} = \frac{3}{144} - \frac{2}{144} = \frac{1}{144} [/tex]
amplificare cu 3 si 2
#Împreunăsuntembrainly
