Question

If 2x+y=7 and x +2y=9 . Find the value of x+y=
A 3
B)
c - 5
0) 5​

Answer 1

Answer:

5.33

Step-by-step explanation:

solve 2 equations we get value

Answer 2

Step-by-step explanation:

Step1 given

2x + y = 7 - equation 1

x + 2y = 9 - equation 2

find- x + y = ?

Step2

subtract equation 2 from equation 1

2x + y = 7

- x + 2y = 9

x - y = -2

x = -2+y - equation 3

Step3

put the value of x in equation 1

2x + y = 7

2( -2 + y ) + y = 7

-4 + 2y + y = 7

3y = 11

y = 11/3

Step 4

put y in equation 3

x = -2+ (11/3)

x = 5/3

Step 5

to find x +y = ?

(5/3) +(11/3) = 16/3

Answer 16/3