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2. The Johnsons are planning a family reunion for 21 people. Each family is made up of
three people. Use a model or numbers to solve the equation 3x = 21. How many families
will attend the reunion?
Show your work

User Yehan
by
3.1k points

2 Answers

10 votes

Answer:

7 families

|||+|||+|||+|||+|||+|||+||| = 21

7 families of 3 = 21

Explanation:

3x=21

x=7 families

User Joe Eng
by
3.6k points
12 votes

Answer: x=7

Explanation:

3x=21

21 divided by 3 is 7

so x equals 7

User Ghasem
by
3.1k points