Question

A+b+c=7820 a+b=4253 b+c=6099 ------------------------- a=?b=?c=? prin doua moduri varog repede

Answer 1

a+b+c=7820
a+b=4253
b+c=6099
4253+c=7820
c=7820-4253
c=3567
a+6099=7820
a=7820-6099
a=1721
1721+b+3567=7820
b=7820-1721-3567
b=2532
V: 1721+2532+3567=7820
mod. 2
a+b+c=7820
a+2b+c=4253+6099=10352 ⇒ b=10352-7820 ⇒ b=2532
a+2352=4253
a=4253-2532
a=1721
2532+c=6099
c=6099-2532
c=3567
V: 1721+2532+3567=7820