Question

Using substitution, which number from the set {6, 13, 18, 26} makes the equation 2x+5=31 true?(1 point) Responses 13 13 18 18 26 26 6

Answer 1

To solve the equation using substitution, we substitute each number from the set {6, 13, 18, 26} into the equation and check if the equation is true for that number.

Using 6:
2(6) + 5 = 12 + 5 = 17 (not equal to 31)

Using 13:
2(13) + 5 = 26 + 5 = 31 (equal to 31)

Using 18:
2(18) + 5 = 36 + 5 = 41 (not equal to 31)

Using 26:
2(26) + 5 = 52 + 5 = 57 (not equal to 31)

Therefore, the number from the set {6, 13, 18, 26} that makes the equation 2x + 5 = 31 true is 13.