how many integers values of x and y are there such that 4X+7Y=3,while mod X<500 and mod y<500?

• x=(3-7y)/4
  if y=1 then x=-1
  y=5 then x=-8 and so on........
  put y=497 then x=...?
  we have tn=497,a=1,d=4,n=?
  tn=a+(n-1)d
  n=??
• 9 years agoHelpfull: Yes(2) No(0)
• x=(3-7y)/4
  if y=1 then x=-1
  y=5 then x=-8 & so on..
  put y=497 then x=-869
  we have tn=497,a=1,d=4,n=125
  tn=a+(n-1)d
  so the answer is 125.
  
• 9 years agoHelpfull: Yes(0) No(0)