Question

-7x +y=-10 and -9x-y=-22

Answer 1

Answer:

x = 2, y = 4

Step-by-step explanation:

- 7x +y = -10

-9x -y = -22

add up both equations

(-7x+-9x) + (y +-y) = (-10 +-22)

(-7x-9x) + (y -y) = (-10 -22)

-16x +0 = -32

-16x = -32

x = -32/ -16

x =2

substitute the value of x into the first equation

- 7x +y = -10

-7(2) + y = -10

-14 +y = -10

collect like terms

y = -10 +14

y = 14-10 = 4

x = 2, y = 4