Question

efectuati calculele a)abc+bca+cab:(a+b+c)= ;b)ab+bc+ca):11=

Answer 1

a)abc+bca+cab:(a+b+c)=
=(100a+10b+c+100b+10c+a+100c+10a+b):(a+b+c)=
=(111a+111b+111c):(a+b+c)=
=111(a+b+c):(a+b+c)=111
b)ab+bc+ca):11=
=(10a+b+10b+c+10c+a):11=
=(11a+11b+11c):(a+b+c)=
=11(a+b+c):11=
=a+b+c