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URGEEENNT ! AFLATIL PE A SI B STIIND CA : (a,b) =13 ,daca a+b =156 .OFER 25 PUNCTE SI CORONITA

Răspuns :

Răspuns:

Explicație pas cu pas:

a=(a,b)·x=13x;  b=(a,b)·y=13y

a+b=156, deci  13x+13y=156, 13(x+y)=156, x+y=156:13=12

Perechea (x,y)∈{(0,12),(1,11),(2,10),(3,9),(4,8),(5,7),(6,6),(7,5),(8,4),(9,3),(10,2),(11,1),(12,0)}

atunci Perechea de numere (a,b)∈(0,156),(13,143),(26,130),(39,117),(52,104), (65,91),(78,78),(91,65),(104,52),(117,39),(130.26),143,13),(156,0)}