How do you solve for y in y=3(-5) to the power of 0.7?

y = 3(-5)^(0.7)

If this is what you meant to type, the expression is UNDEFINED in the set of real numbers. Are you sure you copied the question down correctly?

I'm not exactly sure of what you mean, but if the number (for example) were 2,3, and 6 you could say 2 and 6 multiply to get 6 and 6 divided by 2 would be 3 and so on. You could do this with any operation. Hope this helps, and sorry if this wasa little unclear.