Răspuns :
a+b+c=930; a:2=x; b:2= x+1; c:2=x+2;
a,b,c = ?;
a= 2x;
b= 2x+2;
c= 2x+4;
2x+2x+2+2x+4=930;
6x+6=930 /-6
6x=924;
x=154;
a= 2*154 => a=308;
b= 308+2 => b=310;
c=308+4 => c= 312;
v: 308+310+312=930.
a,b,c = ?;
a= 2x;
b= 2x+2;
c= 2x+4;
2x+2x+2+2x+4=930;
6x+6=930 /-6
6x=924;
x=154;
a= 2*154 => a=308;
b= 308+2 => b=310;
c=308+4 => c= 312;
v: 308+310+312=930.