Question

Order method by Equation Solve
x+y=1
x-y=3​

Answer 1

x+y=4ndndncbbdbhshzhshbaganaoswjs

Answer 2

Answer:

substitution method is used

x=1-y

1-y-y=3

1-2y=3

-2y=2

y=-2/2

y=-1

x-1=1

x=2