Question

Diferenta a doua nr. zecimale e 21,332. Al doilea nr . marit cu 4,22 este de 4,1 ori mai mic decat primul. Aflati cele doua numere.

Answer 1

x-y=21,332; y+4,22=x/4,1=>x=4,1(y+4,22); 4,1(y+4,22)-y=21,332; 4,1y+17,302-y=21,332; 3,1y=4,03; y=1,3; x=22,632

Answer 2

a-b=21,332
b+4,22=a:4,1 ⇒a=(b+4,22)x4,1 ⇒a=4,1b+17,302
4,1b+17,302-b=21,322
3,1b+17,302=21,322
3,1b=21,322-17,302
3,1b=4,02
b=4,02:3,1
b=1,3
a=4,1x(1,3+4,22)=4,1x5,52
a=22,632
V: 22,632-1,3=21,332