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blagie [28]
3 years ago
12

A school plans the weekly reading activities. They have 18 storys books, which is 4 books more than 2 times that of science book

s. What is the number of science books?
Mathematics
1 answer:
Morgarella [4.7K]3 years ago
7 0

Answer:

Number\ of\ science\ books=7

Step-by-step explanation:

Let\ number\ of\ science\ books=x\\\\Story\ books=18\\\\2\times science\ books+4=Story\ books\\\\2x+4=18\\\\Subtract\ 4\ from\ both\ the\ sides\\\\2x+4-4=18-4\\\\2x=14\\\\Divide\ both\ sides\ by\ 2\\\\\frac{2x}{2}=\frac{14}{2}\\\\x=7\\\\Number\ of\ science\ books=7

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