Solution
For this case we can do the following:
11y - 3x = 18
16y -3x = 33
We can multiply the first equation by -1 and we got:
-11y +3x =-18
16y -3x = 33
_______________
16y -11y = 33-18
5y = 15
y= 15/5 = 3
And then solving for x we got
x = -(18 -11*3)/ 3= -15/3 = 5
The equation is 13.95x+1.95=85.65
The answer is 6 compact discs.
4/6
As there are 4 numbers on the dice and there are 6 numbers all together on a dice.
Hope this helps
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