Using subtration, which number from the set ( 6,13,18,26) makes the equation 2x + 5 = 31 true?
A- 6
B- 13
C- 18
D- 26
To solve for x, we can first subtract 5 from 31 to get 26. Then divide 26 by 2 to get x = 13.
Therefore, the number from the set (6, 13, 18, 26) that makes the equation 2x + 5 = 31 true is B- 13.