Question

What is the result of multiplying the second equation by 2 and adding to the first equation?

x+3y=10


2x−y=−1


-------------


A. 5x+3y=6


B. 5x+y=8


C. 3x+2y=9


D. 3x−5y=−12

Answer 1

5x + 3y = 6

Explanation:

Answer 2

5x + y = 8

Explanation:

Given the equations:

x+3y=10 ____ (1)

2x−y=−1 ____ (2)

Multiply (2) by 2

2(2x - y = - 1) = 4x - 2y = - 2

4x - 2y = - 2 - - - (3)

Add (1) and (3)

4x - 2y = - 2

x + 3y = 10

___________

5x + y = 8

_________