Steps of this proof?????
1) c is not = to 0 and cx=1
2) 1/c is a real number
3)1/c(cx) = 1/c x 1
4) (1/c x c)x = 1/c x 1
5) 1x = 1/c x 1
6) therefore/triangle made up of 3 dots x = 1/c
Could you give me the reasons for the 6 steps?
I think the first is given
Favorite Answer
The six steps are just a roundabout way of doing the same thing.
2. We know that c <> 0, therefore 1/c is a real number (it wouldn’t be, if c = 0).
3. Multiple both sides of the equation by (1/c).
(allowed because if B = C, AB = AC)
4. Group the constant terms on the LHS of the equation together. (allowed because A(BC) = (AB)C)
5. The ‘c’s on the LHS cancel out to leave 1. (allowed because c<>0 and C/C = 1)
6. Remove the extra ‘1 from the RHS (allowed because 1xA = A).
It all seems a bit pointless, really.
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