Answer:
3
Step-by-step explanation:

Hope this helps!
9d=h
Needs to be 20 characters
Answer: -8 - (3 x N) = 19
n = number
Step-by-step explanation: i think thats how u write it
Standard form means:
Ax+By=C
Where A is the coefficient of x, B is the coefficient of y, and C is the y intercept.
It's true that some of those say the same thing but your answer must be in that form because that is what the question asks. So it should be 2x+y=-1