Question

solve x + y = and x - y = 2 [ By substitution method ]​

Answer 1

Answer:

ans: 7 and 5

Step-by-step explanation:

x−y=2 ------- (1)

2x−y=9  ------ (2)

From equation 1 :  

y=x−2

Substitute the value of y in equation 2:

2x−y=9

2x−x+2=9

x=9−2

x=7

Now, Substitute x=7 in equation 1:

x−y=2

7−y=2

y=7−2

y=5

Therefore the solution is: x=7 and y=5