S1herinapierChasti S1herinapierChasti

30-11-2016
Mathematics

contestada

prove:
when xz= yz then x=y if z is not equal to zero

Respuesta :

JcAlmighty JcAlmighty

07-12-2016

xz = yz
xz - yz = 0
x * z - y * z = 0
(x - y) * z = 0

So, either (x - y) = 0 or z = 0
It is given z ≠ 0, thus (x - y) = 0
x - y = 0
x = y

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