Question

Suma a doua nr naturale este egala cu 31.La impartirea lorse obtine catul 4 si restul 1. Aflati nr.

Answer 1

a+b=31; a:b=4 rest 1=>a=4b+1; 4b+1+b=31; 5b=31-1; 5b=30; b=30:5; b=6; a=31-6; a=25;

Answer 2

$a+b=31 \\ a:b=4r1=\ \textgreater \ a=4b+1 \\ 4b+1+b=31 \\ 5b=31-1 \\ b=30:5 \\ b=6 \\ a=4*6+1=25$