Question

2x-y=10
Y=-x-1
Solve the system of equations

Answer 1

Answer: (9,8)

Step-by-step explanation:

let 2x - y = 10 be [a] & y = x − 1 be [b]

First, lets substitute [b] into [a] and solve for x

2x - ( x - 1) = 10

2x - x = 10 - 1

x = 9

Now, since x = 9, we can substitute for x in [b]

⇒ y = 9 - 1

y = 8

∴ the solution for the system of equations is x = 9, y = 8 OR (9, 8)