Question

Aflati doua numere stind ca diferenta lor este 6,45 si suma lor este 18,25.

Answer 1

a-b=6,45
a+b=18,25
2a=6,45+18,25
a=24,7:2
a=12,35
b=18,25-12,35=5,9

Answer 2

x-y=6,45
x+y=18,25
6,45+18,25=x*2
x=(6,45+18,25):2
x=24,7:2
x=12,35
12,35-y=6,45
y=12,35-6,45
y=5,9.
Raspuns: x=12,35; y=5,9.