Question

7) Decide whether x= 2 and y=-1 is the solution of the equation 2x + y =3 or not?​

Answer 1

Step-by-step explanation:

for x=2 y= -1

LHS=2x+y

=2×2+(-1)

=4-1

=3

RHS=3

So LHS=RHS

Hence 2 and -1 are the solution of the above equation.

Answer 2

Answer:

x=2 y=-1

2(2) +(-1) =3

4-1=3

3=3

x= 2 and y=-1 is the solution of the equation 2x + y =3