I WILL GIVE YOU 5 STARS AND BRAINERLEST ANDCA LIKE IF U ANSWER THIS 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

x=7

Step-by-step explanation:

3x=21

21 divided by 3 is 7

so x equals 7

7 families

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

  7 families of 3 = 21

Step-by-step explanation:

3x=21

x=7 families

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x