👤

Cate pasari are un gospodar,stiind ca are 102 gaini si rate la un loc,53 rate si gaste la un loc si 79 gaini si gaste la un loc.

Răspuns :

x=gaini
y=rate
z=gaste
x+y=102
y+z=53
x+z=79

x+y-y-z=102-53
x-z=49

x+z=79
x-z+x+z=49+79
2x=128
x=64
y=79-64=15
z=53-15=38
64+15+38=117 pasari in total