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mm, I see that 14 + 28 + 57 = 99 and 142 + 857 = 999, but dunno if that's what you're going for.
Nice find, but the one I know of involves multiplication...
1+8=94+5=92+7=9
mm, I see that 14 + 28 + 57 = 99 and 142 + 857 = 999, but dunno if that's what you're going for.