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12.10.2020 •
Mathematics
Junior high classes of 20 students each met in the cafeteria to take achievement tests. If exactly 7 students sat at each table and 20 tables were used, how many classes took the tests?
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Ответ:
3/5(b+3)
Step-by-step explanation:
three fifths=3/5
sum of b and 3=b+3
multiply 3/5(b+3) or 3/5*(b+3)