Question

if the 2x+y=7andx+2y=5 then find the value of x+y​

Answer 1

Answer:

X + Y = 2 + 3 = 5

X=2. Y=3

Explanation:

2X+Y=7     ---  1

MULTIPLY  X +2Y WITH 2

2X + 2Y = 10

2X +  Y  = 7

-------------------------

2Y - Y = 3

Y = 3

2X + (3) = 7

2X = 7-3 = 4

2X = 4

THERFORE X = 2

Answer 2

2x+y=7--------1

x +2y=5--------2

By 2(2)-1

y=1

Now by 2(1)-2

x=3

Now

x+y=1+3

x+y=4