Question

What is the result of subtracting the second equation from the first ? -7x-y=0 and 7x+8y=-6

Answer 1

- 14x - 9y = 6

Explanation:

- 7x - y = 0 → (1)

7x + 8y = - 6 → (2)

Subtracting (2) from (1) term by term

- 7x - 7x - y - 8y = 0 - (- 6)

- 14x - 9y = 0 + 6

- 14x - 9y = 6