Question 1105562
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Let n and d be the numbers of nickels and dimes, respectively.  Then
(1) {{{n+d = 36}}}  the total number of coins is 36
(2) {{{5n+10d = 220}}}  the total value of the coins -- 5 cents per nickel and 10 cents per dime -- is 220 cents<br>
"solving using elimination and multiplication"<br>
multiply equation (1) times 5
use (2) and the new equation to eliminate n<br>
I will assume you know what to do after that....