Mikayla and Jesse both solved the equation x - 15 = 12 - 8, using

Question

substitution. Mikayla says the answer is x = 19, and Jesse says the answer is
x = 27. Which student is correct, and how do you know? Show your work and
explain your thinking. (2 points)

Answer 1

To determine who is correct, we need to solve the equation x - 15 = 12 - 8 step by step.

x - 15 = 12 - 8
x - 15 = 4

Now, we can add 15 to both sides to isolate x:

x = 4 + 15
x = 19

Therefore, Mikayla is correct. Jesse's answer of x = 27 is incorrect.

To summarize:
x = 19
Therefore, Mikayla's solution is correct.