+19 What is the math behind this? math needs to work up/down - left to right - right to left
all numbers shown on top are given. but with bigger numbers. bottom is what is needed
? - 3 + ?
6 - 2 + 4
? - 1 + ?
11 - 3 + 8
6 - 2 + 4
5 - 1 + 4
+33652 Should this be:
? - 3 = ?
-(6 - 2 = 4)
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? - 1 = ?
If so, rewrite as:
a - 3 = b
-(6 - 2 = 4)
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c - 1 = d
In this case there are an infinite number of solutions!
We have four equations:
a - 3 = b
a - 6 = c
c - 1 = d
b - 4 = d
These are satisfied by
a = 7 + p, b = 4 + p, c = 1 + p, d = p where p is any number
So for example, if p = 0, then a = 7, b = 4, c = 1 and d = 0
If p = 4, then a = 11, b = 8, c = 5 and d = 4
etc.
