I really don't understand how this goes. :/
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The first one all you do is divide by -3.7 to create 1 w.
w = - 11.1/ - 3.7 = 3
The second one is the real devil of the lot. That one is undefined since you need to be dividing by something very large to get a value of zero on the right. Try it with your calculator. Put in 4 for y. Then put in 1000. It's still not zero, but it's getting closer. Keep going like this to convince yourself that you need something very large for y. The only exception to this is if you mean (1/-99) y = 0 in which case y = 0.
The last one is done the same way as the first one. It's a pussy cat comparre to number 2.
4n = 12.5
n = 12.5 / 4
n = 3.125
w = - 11.1/ - 3.7 = 3
The second one is the real devil of the lot. That one is undefined since you need to be dividing by something very large to get a value of zero on the right. Try it with your calculator. Put in 4 for y. Then put in 1000. It's still not zero, but it's getting closer. Keep going like this to convince yourself that you need something very large for y. The only exception to this is if you mean (1/-99) y = 0 in which case y = 0.
The last one is done the same way as the first one. It's a pussy cat comparre to number 2.
4n = 12.5
n = 12.5 / 4
n = 3.125