Răspuns :
notam cu a,b,c numerele cautate
ma=(a+b+c)/3=58
a+b+c=174
b=a+3
c=2b+1 inlocuim pe b c=2(a+3)+1=2a+6+1=2a+7
a+a+3+2a+7=174
4a+10=174
4a=174-10
4a=164
a=164/4
a=41
b=a+3=41+3=44
c=2a+7=2x41+7=82+7=89
ma=(a+b+c)/3=58
a+b+c=174
b=a+3
c=2b+1 inlocuim pe b c=2(a+3)+1=2a+6+1=2a+7
a+a+3+2a+7=174
4a+10=174
4a=174-10
4a=164
a=164/4
a=41
b=a+3=41+3=44
c=2a+7=2x41+7=82+7=89