Răspuns :
a+b+c=3400
a=b+40 b=a-40
a=c-80 c=a+80
a+a+80+a-40=3400
3a=3360
a=1120
b=1080
c=1200
a=b+40 b=a-40
a=c-80 c=a+80
a+a+80+a-40=3400
3a=3360
a=1120
b=1080
c=1200
a.I______I+40
b.I______I
c.I______I+80+40
Suma este 3400 . Aflam suma partilor egale .
3400-160=3240 ( suma partilor egale )
3240:3=1080 ( numarul b )
1080+40=1120 ( numarul a )
1080+80+40=1200 ( numarul c )
Verificare : 1080+1120+1200=3400
b.I______I
c.I______I+80+40
Suma este 3400 . Aflam suma partilor egale .
3400-160=3240 ( suma partilor egale )
3240:3=1080 ( numarul b )
1080+40=1120 ( numarul a )
1080+80+40=1200 ( numarul c )
Verificare : 1080+1120+1200=3400