Answer :
1/4 + w = 6 1/3
- 1/4 - 1/4
------------------
w = 6 1/12
- 1/4 - 1/4
------------------
w = 6 1/12
[tex]\frac{1}{ 4}+w= 6\frac{1}{3} \ \ |(-\frac{1}{4})\\ \\ \frac{1}{ 4}-\frac{1}{4}+w= 6\frac{1}{3}-\frac{1}{4}\\ \\w= 6\frac{4}{12}-\frac{3}{4}\\ \\w=6\frac{1}{12}[/tex]