I need to solve this equation couple.

Is this correctly solved?

Thanks!

7x + 9y - 8 = 0

9x - 8y - 69 = 0

7x + 9y = 8

9y = 8 - 7x

8 * 9y = 8 * (8-7x)

72y = 64 - 56x

9x - 8y = 69

-8y = 69 - 9x

-9 * (-8y) = -9 * (69 - 9x)

72y = 81x - 621

64-56x = 81x - 621

64 - 56x + 621 = 81x

64 + 621 - 56x = 81x

685 = 81x + 56x

685 = 137x

x = 685/137 = 5

7 * (5) + 9y - 8 = 0

35 + 9y - 8 = 0

27 + 9y = 0

9y = -27

y = -3

Solution:

X=5

Y=-3