Question

What is the result of subtracting the second equation from the first?
x−3y=6
−8x−y=6

Answer 1

9x - 2y = 0

Explanation:

Given

x - 3y = 6 → (1)

- 8x - y = 6 → (2)

Subtracting (2) from (1) term by term gives

x - (- 8y) - 3y - (- y) = 6 - 6 , that is

x + 8y - 3y + y = 0

9x - 2y = 0