5x6y19 8x3y20Solution5x 6y 19 8x 3y 20 Multiplying by 2

5x+6y=19
-8x+3y=20

5x + 6y = 19

-8x + 3y = 20

Multiplying by 2 in 2nd equation we get, -16x + 6y = 40

Subtracting this new equation from 1st equation we get,

(5x + 6y) - (-16x + 6y) = 19 - 40

or, 21x = -21

or, x = -1

Putting the value of x in 1st equation we get,

5 * (-1) + 6y = 19

or, 6y = 24

or, y = 4

So, x = -1 and y = 4