Question

Use substitution to determine which number from the set \{6, 7, 8, 9\} makes the equation 63 ÷ x = 9 true.

Answer 1

To determine which number from the set {6, 7, 8, 9} makes the equation 63 ÷ x = 9 true, we can substitute each number into the equation and check if it satisfies the equation.

1. Substitute 6:

63 ÷ 6 = 10.5 (not equal to 9)

2. Substitute 7:

63 ÷ 7 = 9 (equals to 9)

3. Substitute 8:

63 ÷ 8 = 7.875 (not equal to 9)

4. Substitute 9:

63 ÷ 9 = 7 (not equal to 9)

Therefore, the number 7 from the set {6, 7, 8, 9} makes the equation 63 ÷ x = 9 true.