Question

-x + y = 1
-7x + 6y = -1
use substitution to solve

Answer 1

(x,y)=(7,8)

Explanation:

-x + y = 1

-7x + 6y = -1

x=-1+y

-7(-1+y)+6y=-1

7+(-7y)+6y=-1

-y=-8

y=8

x=-1+8

x=7

Answer 2

Answer:x=7, y= 8

Step-by-step explanation: y= x+1, put in 2nd equaiton to get, -7x + 6x+6 =- 1, -x = -7, x=7. -7+y=1 ,y=8