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# How do you answer cube root 1/27 = 3-y (the negative y is a power on 3)?

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How do you answer cube root 1/27 = 3-y (the negative y is a power on 3)?

Guest Sep 24, 2017

#1
+26366
+4

Like so

$$\frac{1}{27}=3^{-y}\\ \frac{1}{27}=\frac{1}{3^y}\\ 3^y=27\\y=3$$

Alan  Sep 24, 2017
Sort:

#1
+26366
+4

Like so

$$\frac{1}{27}=3^{-y}\\ \frac{1}{27}=\frac{1}{3^y}\\ 3^y=27\\y=3$$

Alan  Sep 24, 2017
#2
0

O ma god Alan your'e a jeniuz thanks so much

Guest Sep 25, 2017

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