Question

solve
0.002(7-k)+0.04(k-2)=1

Answer 1

Hint:
0.002 = \(\frac{1}{500}\)
0.04 = \(\frac{1}{25}\)

Answer 2

Hint 2:
\[\frac{19}{500}k-\frac{33}{500}=1\]

Any more hints and I'd have to give away the answer ;-)