Question

ajutor dau 25 de puncte.Afla numerele naturale a,b,c cunoscand urmatoarele relatii dintre ele a+b+c=420 a:b= 1 rest c b=40+c

Answer 1

a+b+c=420
a:b=1 rest c
b=40+c
 40+c+a+c=420
2c=420-4
c=416:2
c=208
b=40+208
b=248
a+b+c=420
a+248+208=420
a+456=420
a=456-420=36

Answer 2

a:b=1 rest c  => a=b+1
a+b+c=b+1 + b + c=40+c+1+40+c+c=3xc+81=420
3xc=420-81=339
c=339:3=113
b=40+c=40+113=153
a=b+1=153+1=154