To determine which number from the set {6, 13, 18, 26} makes the equation 2x + 5 = 31 true, we substitute each number into the equation and check if it is true.
First, substitute 6 into the equation:
2(6) + 5 = 31
12 + 5 = 31
17 = 31 (not true)
Next, substitute 13 into the equation:
2(13) + 5 = 31
26 + 5 = 31
31 = 31 (true)
Then, substitute 18 into the equation:
2(18) + 5 = 31
36 + 5 = 31
41 = 31 (not true)
Finally, substitute 26 into the equation:
2(26) + 5 = 31
52 + 5 = 31
57 = 31 (not true)
From the given set, only 13 satisfies the equation 2x + 5 = 31.
Using substitution, which number from the set {6, 13, 18, 26} makes the equation 2x+5=31 true?(1 point)
Responses
6
6
26
26
18
18
13
13
1 answer
1 answer