Answer:
x = 
y = 
Step-by-step explanation:
By elimination method
3x +7y = 11 ......eqn(1)
x - y = 0 .......eqn(2)
Mulitplying equation (2) with 7 we get:
7x - 7y = 0 ..........eqn(3).
Adding equation (1) and (3), we get:
10x = 11
x = 
Now plugging the value of x in equation (2) we get:
y = 
By substitution method
x - y = 0
x = y.............eqn(4)
3x + 7y = 11........eqn(5)
Substituting the value of x in equation (5) we get:
y = 
Now plugging the value of y in equation (3) we get:
x =
.