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November 26, 2014

November 26, 2014

Posted by **jenny** on Wednesday, February 6, 2013 at 3:46pm.

- maths -
**Steve**, Wednesday, February 6, 2013 at 3:52pma*b = a*c

a*b - a*c = 0

a*(b-c) = 0

if a≠0, b-c = 0, since the product is zero.

b-c = 0

b = c

a^b = a^c

a^b / a^c = 1

a^(b-c) = a^0

b-c = 0

b = c

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