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November 23, 2014

November 23, 2014

Posted by **floyd** on Wednesday, July 2, 2014 at 11:35pm.

- algebra -
**Steve**, Thursday, July 3, 2014 at 12:16amI'd guess that depends on the size of the tank.

- algebra -
**Akuyoma**, Thursday, July 3, 2014 at 12:52amIf you need to add or subtract two rational expressions, how would you do it

- algebra -
**Steve**, Thursday, July 3, 2014 at 5:11amfigure the common denominator. Then, using that, add/subtract the values:

1/3 + 3/7

21 = 3*7, so you really have

(1*7)/(3*7) + (3*3)/(3*7) = (7+9)/21 = 16/21

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