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I Need help solving this math brain teaser I found in a puzzle book. The following lists four math equations with a different number being substituted by a letter. Can you figure out what number each symbol represents. You will use the same number for that symbol every time it is listed.


1.) A + B + C + 31 = 104

2.) B + 31 = A + C

3.) A + A + 31 + B = C + C

4.) A + B + C = B + B + 31

A = 13, B = 21 & C = 39.

Hi icauser 44

A= 13, B = 21, C = 39

Its not too difficult if you are happy with simultaneous equations.

I took a short cut and used Bulgarian Determinants.

Have a nice evening Cheers Thea(o)

Hi ginge Suppose you noticed that EQ 4 is redundant.

Have a nice evening. Waiting for BBM to post.
Cheers Thea(o)

Hi penda/thea, yes, like you I found "it" straightforward.
Hope you also have a very pleasant evening.

Thanks for all the help guyz.