Question

if 2X + 3 Y is equal to 14 and 2 x minus 3 Y is equal to 2 then find the value of x y​

Answer 1

Answer:

2x+3y=14        -(1)

2x-3y=02         -(2)

subtract 2 from 1...we get

6y=12

therefore,y=2

put value of y in 1 ....we get x=4

therefore the value of xy=2*4=8

Answer 2

Explanation:

2x +3y = 14

2x -3y = 2

Adding both equations..

2x +3y = 14

2x -3y = 2

____________

4x = 16

x = 4

put x = 4 =>

2x -3y = 2

2(4) -3y = 2

3y = 6

y = 2

xy = 4×2 = 8

Therefore (x, y) =(4, 2)

And xy = 8