Let 2a+2b+2c=42 where a ≠ b ≠ c and a, b, c ∈ N. Determine (1/a)+(1/b)+(1/c)
Strictly by inspection
2^1 + 2^3 + 2^5 =
2 + 8 + 32 =
42
So
1/2 + 1/3 + 1/5 =
15/30 + 10/30 + 6/30 =
31 / 30
thank you so much! that's correct
