Răspuns:
[tex]\boldsymbol{a) \ \red{ \dfrac{43}{48} }}, \ \boldsymbol{b) \ \red{ \dfrac{17}{144} }}, \ \boldsymbol{c) \ \red{ \dfrac{65}{143} }}[/tex]
Explicație pas cu pas:
a) Aflăm prin scădere
[tex]\dfrac{^{2)} 23}{24} - \dfrac{3}{48} = \dfrac{46}{48} - \dfrac{3}{48} = \dfrac{46-3}{48} = \dfrac{43}{48}[/tex]
Proba:
[tex]\dfrac{3}{48} + \dfrac{43}{48} = \dfrac{46}{48}^{(2} = \dfrac{23}{24}[/tex]
b) Aflăm prin scădere
[tex]\dfrac{77}{144} - \dfrac{^{12)} 5}{12} = \dfrac{77}{144} - \dfrac{60}{144} = \dfrac{77-60}{144} = \dfrac{17}{144}[/tex]
Proba:
[tex]\dfrac{77}{144} - \dfrac{17}{144} = \dfrac{60}{144}^{(12} = \dfrac{5}{12}[/tex]
c) Aflăm prin scădere
[tex]\dfrac{^{13)} 8}{11} - \dfrac{39}{143} = \dfrac{104}{143} - \dfrac{39}{143} = \dfrac{104-39}{143} = \dfrac{65}{143}[/tex]
Proba:
[tex]\dfrac{39}{143} + \dfrac{65}{143} = \dfrac{104}{143}^{(13} = \dfrac{8}{11}[/tex]
