Question

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

Answer 1

Answer:

$-14x-9y=6$

Step-by-step explanation:

we have

$-7x-y=0$ ---> First equation

$7x+8y=-6$ --->Second equation

we know that

To subtract the 2nd equation from the first, negate all three of the second equation terms:  -7x-8y=6

and then adds this result with the first equation

so

$-7x-y=0\\-7x-8y=6\\--------\\-14x-9y=6$