SOLUTION: I have two problems on my practice final that I am stumped on. Can someone please show me step by step how to do these? Thank you so much! 7/v=8/v-1/3 (cube)3 sqrt y^13* (cube)3

Question 470364: I have two problems on my practice final that I am stumped on. Can someone please show me step by step how to do these? Thank you so much!
7/v=8/v-1/3
(cube)3 sqrt y^13* (cube)3 sqrt 81y^14.
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
7/v = 8/v - 1/3
Multiplying through by v gives
7 = 8 - v/3
Now collect like terms and solve for v:
v/3 = 8 - 7 -> v/3 = 1 -> v = 3
----------------------
It's not clear what the expression is from the way it's written so I can't solve the 2nd one for you.

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