Question

se stie ca : ab+ac+a=165 si b+c=10. aflati a

Answer 1

ab+ac+a=165 si b+c=10
a(b+c+1)=165
a(10+1)=165
a*11=165
a=165:11
a=15

Answer 2

 ab+ac+a=165  b+c=10.a(b+c+1)=165
a x 11=165
a=165:11
a=15