Question

solve the following simultaneous equation
7y+8x=2xy
2y+13x=22xy

Answer 1

Answer:

In this equation :

$7y + 8x = 2xy$

Multiply both sides by 11 :

$77y + 88x = 22xy$

Now,

Subtract the second equation from the first :

$(77y + 88x) - (2y + 13x) = 22xy - 22xy$

$77y - 2y + 88x - 13x = 0$

$75x + 75y = 0$

$75(x + y) = 0$

$x + y = \frac{0}{75}$

$x + y = 0$