Question

1. Efectuați calculul si scrieti rezultatul sub forma de fractie ireductibila:
a) 17/3 - 15/3,
b) 243/945 - 126/945,
c) 118/23 - 105/23,
d) 89/75 - 14/75
Dau coroana! (P.S: "/" înseamnă supra)

Answer 1

a)
$\frac{17}{3} - \frac{15}{3} = \frac{17 - 15}{3} = \frac{2}{3}$


b)
$\frac{243}{945} - \frac{126}{945} = \frac{24 3 - 126}{945} = \frac{117}{945} = \frac{39}{315} = \frac{13}{105}$


c)
$\frac{118}{23} - \frac{105}{23} = \frac{118 - 105}{23} = \frac{13}{23}$



d)
$\frac{89}{75} - \frac{14}{75} = \frac{89 - 14}{75} = \frac{75}{75} = \frac{1}{1} = 1$

Answer 2

17/3-15/3=2/3 b) 243/945--126/945=117/945=39/315=13/105
c )118/23-105/23=13/23 d) 89/75-14/75=75/75=1/1