Question

Find the solution of the linear equation
x+y=-1 and 2x-y=7

Answer 1

Answer:

x=2

y= -3

Step-by-step explanation:

I) x+y=-1 i.e x=-1-y

ii) 2x-y=7 i.e x= (7+y)/2

solving both

-1-y=(7+y)/2

or -2-2y=7+y

or , -2-7=3y

or -9=3y i.e y=-3

putting value of y in x+y=-1 we get

x= 2