Question

Suma a trei numere este 346.fiecare numar este cu 13 mai mare decat dublul precedentului.afla numerele

Answer 1

a+b+c=346
b=2a+13
c=2b+13=>c=2(2a+13)+13=>c=4a+26+13=>c=4a+39
a+2a+13+4a+39=346
7a=346-52
a=294:7
a=42
b=2x42+13=97
c=2x97+13=207

Answer 2

a+b+c = 346
b= 2a+13
c=2b+13
a+2a+13+2b+13=346
3a+2b+26=346
b=2a+13
3a+4a+26+26=346
7a=346-26-26
7a=294
=> a=294:7
a=42
b=2*42*13
b=84+13
b=97
c=97*2+13
c=194+13
c=207