Question 808182
They don't specify which is x or y so i will say x=n and y=d
I like using the first letter of the word because its easier to know what I'm calculating. Its a personal preference do as you please.
n=nickels which are 0.05 of a dollar
d=dimes which are 0.1 of a dollar
{{{n+d=27}}}
{{{.05n+.1d=1.95}}} id multiply by ten so i can use the subtraction method
{{{.5n+1d=19.50}}} subtract the top equation with this one the d's cancel then solve for n
{{{1n-.5n=27-19.50}}} add like terms
{{{.5n=7.50}}} divide by .5 or multiply by 2
{{{n=15}}}
{{{27-14=d}}} solve for d
{{{12=d}}}
So 12 dimes and 15 nickels
Or 
x=15 and y=12
Lol found it i thought i did this right. All is well now.