Question

afla nr b si c,stiind ca nr b este triplul nr c,a=5,axb-axc=120

Answer 1

a(b-c) =120 
5(b-c) = 120
b-c=24 =>b=24+c 
b=3c
24+c=3c | -c
24= 2c
c= 12, b=36

Answer 2

a*b-a*c=120;a=5; b=3c; b si c=?? a*b-a*c=120 a*(b-c)=120 b-c=120:a b-c=120:5 b-c=24 b-c=24 3c-c=24 2c=24 c=24:2=12. c=12 b-c=24 b-12=24 b=24+12 b=36