Question

Find value of y and x
y-x+2=0
x-2y-4=0

Answer 1

Answer:

y=-2

x=0

Step-by-step explanation:

y-x+2=0 —1

x-2y-4=0 —2

-x+y=-2

x-2y=4

By using elimination method,

-y=2

y=-2

Put y=-2 in equation 1

-2-x+2=0

-x=0

x=0

Answer 2

Step-by-step explanation:

y-x+2=0

y-x=-2------- -2

x-2y-4=0

x-2y=4----------- 4

Let x = 0

y-0=-2

y = -2

Let y = 1

1- x= -2

x= -2+1

x= -1