Question

Find the solution to the system of equations -x + y = 1 and -2x + y = -4

Answer 1

5

Step-by-step explanation:

-x+y=1

y=1+x---------->1

-2x+y=-4

-2x+1+x=-4

-x=-5

x=5

Answer 2

Answer:

-x+y=1

x=y-1

-2*(y-1)+y=-4

-2y+2+y=-4

-y=-4-2

y=6

x=6-1

x=5