Question

afla numarul abcd,stiind ca:a-b=1;b+c=12;c-d=4;e-d=6;18-e=9.cu pot rezolva.respect

Answer 1

a=b+1, b=a-1

c=d+4

d=e-6

18-e=9 => e=18-9, e=9

d=9-6, d=3

a=b+1, b=a-1

c=d+4 => c=3+4, c=7

b+c=12 , b=12-7, b=5

a=b+1, a=5+1, a=6

Numarul este: 6573