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angellv917
24.08.2019 •
Mathematics
John currently has enough money to buy 45 books. if each book cost 10 cents less, john could buy 5 more books. how much money does john have to spend on book? ( be specific with the steps to get the result because i've been having a hard time : ? )
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Ответ:
45x = 50(x - .1)
Now, multiply across the parentheses:
45x = 50x - 5 (Now, combine terms over the equal sign)
-50x -50x
-5x = -5 (Now, divide off the -5 from both sides)
/-5 /-5
x = 1
This means that the current cost of a book is $1. This works out if you test it.
Hope this helps!
~ArchimedesEleven
Ответ:
————
x+2