Question

Buna, m-am cam blocat la aceasta problema, ma puteti ajuta?

A+b=797
B+c=687
A+c=516
A, b, c=?

Answer 1

a+b=797 => a=797-b
b+c=687 => c=687-b
a+c=516 => 797-b + 687-b =516 => 1484 - 2b=516 > 1484-516=2b => 
2b=968 => b= 484
a=797-b = 797-484
a=313
c=687-b=687-484
c=203

Answer 2

a+c=516 <=> a= 516-c b+c=687 <=> b=687-c a+b =797 <=> 516-c+687-c=797 <=> -2c=797-516-687 <=> -2c = -406 <=> c = 406/2 <=> c =203 a-c=516 <=> a=516-c = 516-203 = 313 b+c=687 <=> b = 687-c <=> b =687-203 <=> b=484