Question

a+b+c=56
a:b=2 rest 7
b:c=3 rest 3

Answer 1

a:b=2 rest 7                b:c=3 rest 3
a=2b+7                       b=3c+3
=>2X(3c+7)=a
6c+14=a
=>6c+14+3c+3+c=57
10c+17=57            10c=57-17=40         c=40:10=4
b=3X4+3= sti tu
a=2X...+7= sti tu

Answer 2

a+b+c=56
a:b=2 fest 7
b:c=3 rest 3
-------------------
a=?;b=?;c=?

b:c=3 rest 3....=> c>3....=>  c=1+3.....=>c=4
b:4=3 rest 3
b=4*3+3
b=12+3
b=15

15:4=3 rest 3

a:b=2 rest 7
a:15=2 rest 7
a=15*2+7
a=30+7
a=37

a=37
b=15
c=4

a+b+c=56
37+15+4=56