Question

Un nr este cu 72 mai mare decat alt nr . Daca ampartim suma lor la diferenta lor avem cat 5 si rest 2 . Aflati nr

Answer 1

a=b+72

(a+b):(a-b)=5 rest 2

(b+72+b):(b+72-b)=5 rest 2

(2b+72):72=5 rest 2

2b+72=72*5+2

2b+72=362

2b=362-72

2b=290

b=145

a=145+72

a=217