Question

Află fractiile necunoscute:
Pls repede am nevoie urgent pls ​

Answer 1

$a \: + \frac{2}{7} = \frac{7}{7} \\ a \: = \frac{7}{7} - \frac{2}{7} \\ a \: = \frac{5}{7}$

$b \: + \frac{5}{8} = \frac{8}{8} \\ b \: = \frac{8}{8} - \frac{5}{8} \\ b \: = \frac{3}{8}$

$c \: + \frac{4}{12} = \frac{17}{12} \\ c \: = \frac{17}{12} - \frac{4}{12} \\ c \: = \frac{13}{12}$