Question

For which equation is x = 5 a solution?

A) 2 + x = 3
B) 3x = 15
C) x - 7 = 12
D) 2^5 = 25

Answer 1

To find the equation for which x = 5 is a solution, we substitute x = 5 in each equation and check for true statements. The equations where x = 5 is a solution are B) 3x = 15 and D) 2^5 = 25.

Step-by-step explanation:

To find the equation for which x = 5 is a solution, we need to substitute x = 5 in each equation and see which one gives a true statement.

1. For option A) 2 + x = 3, substituting x = 5 gives 2 + 5 = 3, which is not true.
2. For option B) 3x = 15, substituting x = 5 gives 3(5) = 15, which is true.
3. For option C) x - 7 = 12, substituting x = 5 gives 5 - 7 = 12, which is not true.
4. For option D) 2^5 = 25, substituting x = 5 gives 2^5 = 25, which is true.

Therefore, the equations for which x = 5 is a solution are B) 3x = 15 and D) 2^5 = 25.