Question

Paul was asked to use the elmination to find the solution to the system of linear equations

5x + 4y = 1
−2x − 8y = −26
What are the missing steps in his work below?
5x + 4y = 1 −2x − 8y = −26
10x + 8y = 2 + (−2x −8y = −26) 8x + 0y = −24 8x = −24 x = −3 5x + 4y = 1 5(−3) + 4y = 1 −15 + 4y = 1 4y = 16
y = 4 Select one: A. 5x + 4y = 1 + (−2x − 8y = −26)
B. 2⋅[5x + 4y = 1] 10x + 8y = 2
C. 5x + 4y = 1 − (−2x − 8y = −26)
D. −5⋅[−2x − 8y = −26] 10x + 40y = 130

Answer 1

Option B is correct.

Explanation:

Paul was asked to use the elmination to find the solution to the system of linear equations

What are the missing steps in his work below?

So, the step missing is multiplying equation 1 by 2 i.e

So, Option B is correct.