Answer :
[tex]u+\frac{4}{5}=2\frac{1}{3}\\
u+\frac{4}{5}=\frac{7}{3}\\
u=\frac{7}{3}-\frac{4}{5}\\
u=\frac{35}{15}-\frac{12}{15}\\
u=\frac{23}{15}[/tex]
4 1
u + -- = 2 ---
5 3
1 2 * 3 + 1 7
2 ---- = ---------------- = ------
3 3 3
Now we have to do
4 7
u + -- = ---
5 3
7 4 7 * 5 - 4 * 3
u = ------- - ----- = ------------------------
3 5 3 * 5
35 - 12 23
u = ------------------ = ------
15 15
u + -- = 2 ---
5 3
1 2 * 3 + 1 7
2 ---- = ---------------- = ------
3 3 3
Now we have to do
4 7
u + -- = ---
5 3
7 4 7 * 5 - 4 * 3
u = ------- - ----- = ------------------------
3 5 3 * 5
35 - 12 23
u = ------------------ = ------
15 15