Question

Afla toate numerele de forma abc ,in care 4a+b+c=12

Answer 1

4a+b+c=12
a≠0, a≤3
=> a=1 =>b+c=8=> b,c=0,8; 1,7; 2,6; 3,5; 4,4; 5,3; 6,2; 7,1; 8,0; 
 a=2 =>b+c=4=>b,c=0,4; 1,3; 2,2; 3,1; 4,0; 
 a=3 =>b+c=0=>b,c=0,0; 
Deci, numerele sunt:

108, 117, 126, 135, 144, 153, 162, 171, 180
204, 213, 222, 240
300