let's solve for c :
[tex] \hookrightarrow \: 2c - 3w = k - 3[/tex]
[tex] \hookrightarrow \: 2c = k - 3 + 3w[/tex]
[tex] \hookrightarrow \: c = \dfrac{k + 3w - 3}{2} [/tex]
Answer:
4k=-5c
5divided by 4=0.1
c=0.1
