Răspuns :
a)1/6+5/4→aducem la acelasi numitor,care este 12
2/12+15/12=17/12
b)13/21+13/21=26/21
[tex] \frac{1}{6}+ \frac{5}{4} =[/tex] amplifici prima fractie cu4 si a doua cu 6
[tex] \frac{4+30}{24}= \frac{34}{24} = \frac{17}{12} [/tex]
[tex] \frac{13}{21} + \frac{13}{21} = \frac{26}{21} [/tex]
[tex] \frac{4+30}{24}= \frac{34}{24} = \frac{17}{12} [/tex]
[tex] \frac{13}{21} + \frac{13}{21} = \frac{26}{21} [/tex]