GCD and the magic of subtraction

Re:GCD and the magic of subtraction by roelschroeven on Tuesday August 25, 2020 @11:19AM (#24272230)

Yes, of course, I do know that. It's not what I meant.

Suppose we expand that first example. I would write: 3(x + 5) = 3x + 3⋅5 The notation I'm talking about writes: 3(x + 5) = 3x + 3(5)

It's that 3(5) instead of 3⋅5 I'm talking about.

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Re:GCD and the magic of subtraction by zodiac on Tuesday August 25, 2020 @02:01PM (#24274090)

I prefer to use a dot like you, but find calculations like "let x=5, then 3(1+x) = 3(1+5) = 3(6) = 18" acceptable, because each equation is just a lock substitution

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