Question

suma a doua numere intregi consecutive este (-21). Aflati numerele

Answer 1

a+b=-21
b=a+1(consecutive)
a+a+1=-21
2a+1=-21
2a=-22
a=-22:2
a=-11
b=-11+1=-10

Answer 2

Fie x si y numerele
x+y=-21
x=y+1
y+1+y=-21
2y+1=-21
2y=-22
y=-11
x=-10