Question

x+2y=5 and 2x+y=7 find the value of x+y

Answer 1

Answer:

x + y = 4

Explanation:

Given x+2y = 5----( 1 )

2x+y = 7----( 2 )

Add (1) and (2) , we get

=> 3x + 3y = 12

Divide each term by 3 ,we get

=> x + y = 4

Therefore,

x + y = 4

••••

Answer 2

Answer:

X+2Y=5

X=5-2Y .......(1)

2X+Y=7

Putting value of X from equation (1)in above equation we get:

2(5-2Y) +Y=7

(10-4Y)+Y=7

10-3Y=7

3Y=3

Y=1.....

Thank you

Step-by-step explanation: