Question 1089294
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3x +  y = 48     (1)    (x is the weight of the box of gaming machines)
3x + 5y = 72     (2)    (y is the weight of the box of DVDs)
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Subtract equation (1) from equation (2) (both sides). You will get

4y = 72 - 48 = 24  ====>  y = {{{24/4}}} = 6.

Thus the the weight of the box of DVDs is 6 pounds.


From this point, can you complete the solution on your own ?
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