Răspuns :
[tex] \frac{250 ^{(2} }{350} = \frac{25^{(5}}{35} = \frac{5}{7} \\ \\ \frac{120^{(10}}{130}= \frac{12}{13} \\ \\ \frac{26^{(2}}{24} = \frac{13}{12} =1 \frac{1}{12} \\ \\ \frac{63^{(7}}{49} = \frac{9}{7}=1 \frac{2}{7} [/tex]