Question 1061986
Linear systems application for coin combination


n nickels and d dimes


70 more nickels and dimes?  No sense here.  IF you meant, 70 MORE nickels than dimes, then  {{{n-d=70}}}, and the other equation is  {{{0.05n+0.1d=4.65}}}.


The money accounting equation simplifiable if multiply both members by 20 to have {{{n+2d=93}}}, and the system is easily solved partly through elimination.


{{{system(n-d=70,n+2d=93)}}}