Question

Mikayla and Jesse both solved the equation x−15=12−8 , using 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 solve the equation x-15 = 12-8, we can use the substitution method.
First, let's solve it using Mikayla's answer:

x - 15 = 12 - 8

x - 15 = 4

Add 15 to both sides:

x - 15 + 15 = 4 + 15

x = 19

Now let's solve it using Jesse's answer:

x - 15 = 12 - 8

x - 15 = 4

Add 15 to both sides:

x - 15 + 15 = 4 + 15

x = 19

We can see that both Mikayla and Jesse reached the same answer: x = 19.

Therefore, both students are correct.