Question

aflati numerele a,b si c,stiind ca a+b=c;a-b=b si b+c=32

Answer 1

a + b =c
a - b = b
b + c =32

Daca adunam primele doua relatii obtinem:
a + b + a -b = c + b
2a = 32
a = 16

dar a - b = b, deci a = 2b, b=a/2=16/2=8
c = 32 - b = 32 - 8 = 24