I assume the problem is y/9 + 5 = 0. To solve this, you try to get y alone on its own side of the = sign. Right now, there is a (+5) and a (/9) with the y, and we need to get rid of them. You do this by going in the opposite order of PEMDAS (the order of operations). First we will get rid of the (+5). You always get rid of things by doing the opposite (inverse operation). Since it is +, we will subtract 5. Whatever you do to one side of the = sign, you also must do to the other, so we will subtract 5 from both sides. After we do that, we get y/9 = -5. Now, we must get rid of the /9, so we do the opposite of divide, which is multiply. We multiply both sides by 9 and we get y = -45.
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Zero (0)
x = -5/3
5^0 *5^-3*5^4
(5, 0)
That is not a correct equation. The numbers on the left equal -16, not 0. This is an equation with no solution.