Question

calculati suma numerelor x si y :
x =
$\frac{9}{24} + \frac{13}{24} + \frac{15}{72}$

y =
$\frac{23}{40} + \frac{49}{40} + \frac{6}{80}$
dau coroana!!!!!​

Answer 1

Răspuns:

x=9/24+13/24+15/72

x=22/24+15/72=amplificam prima fractie cu 3

x=66/72+15/72=81/72=se simplifica si numitorul si numaratorul cu 9

x=9/8

y=23/40+49/40+6/80

y=72/40+6/80 amplificam prima fractie cu 2

y=144/80+6/80

y=150/80=15/8

x+y=9/8+15/8

x+y=24/8 se simplifica fracta cu 8

x+y=3