Răspuns :
a,b, c - laturi
a = a
b=a+1
c=a+2
a+b+c=51
a+a+1+a+2=51
3a+3=51
3a=51-3
3a=48
a=48:3
a=16
b=16+1=17
c=16+2=18
a = a
b=a+1
c=a+2
a+b+c=51
a+a+1+a+2=51
3a+3=51
3a=51-3
3a=48
a=48:3
a=16
b=16+1=17
c=16+2=18
a |–––|
b |–––|–|
c |–––|––|
b=a+1
c=a+2
a+b+c=51
a+a+1+a+2=51
3a+3=51
3a=51-3
3a=48â
a=48/3
a=16
b=17
c=18