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21 votes
21 votes
It is a linear equation but i don't know how to set the equation up , need help​

It is a linear equation but i don't know how to set the equation up , need help​-example-1
User Alysson Myller
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3.7k points

1 Answer

11 votes
11 votes

Explanation:

x = number of novels

y = number of dictionaries

x = 8y

88x + 208y = 13680

now, using the identity of the first equation in the second equation gives us

88(8y) + 208y = 13680

704y + 208y = 13680

912y = 13680

y = 13680/912 = 15

x = 8y = 8×15 = 120

so, there were 120 novels and 15 dictionaries sold.

User Ruslan
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