Now, \(\left( -4\frac { 5 }{ 22 } \right) -\left( -2\frac { 6 }{ 11 } \right) \)
= \(\frac { -93 }{ 22 } -\left( \frac { -28 }{ 11 } \right) \)
= \(\frac { -93 }{ 22 } +\frac { 28 }{ 11 } \)
= \(\frac { -93+28\times 2 }{ 22 } \)
= \(\frac { -93+56 }{ 22 } =\frac { -37 }{ 22 } =-1\frac { 15 }{ 22 } \)

Write the given rational numbers in the standard form and add them.
\(\frac { -6 }{ 11 } +\frac { 8 }{ 11 } +\frac { -12 }{ 11 } =\frac { -6+8-12 }{ 11 } =\frac { -10 }{ 11 } \)

First, make the denominators positive and write the numbers in standard form as \(\frac { -3 }{ 5 } ,\frac { 7 }{ -10 } ,\frac { -15 }{ 20 } ,\frac { 14 }{ -30 } ,\frac { -8 }{ 15 } \) Now, the LCM of 5,10,15,20 and 30 is 60 (How?). Change the given rational numbers to their equivalent form with common denominator 60.
\(\frac { -3 }{ 5 } =\frac { -3 }{ 5 } \times \frac { 12 }{ 12 } =\frac { -36 }{ 60 } \)
\(\frac { 7 }{ -10 } =\frac { -7 }{ 10 } \times \frac { 6 }{ 6 } =\frac { -42 }{ 60 } \)
\(\frac { -15 }{ 20 } =\frac { -15 }{ 20 } \times \frac { 3 }{ 3 } =\frac { -45 }{ 60 } \)
\(\frac { -14 }{ 30 } =\frac { -14 }{ 30 } \times \frac { 2 }{ 2 } =\frac { -28 }{ 60 } \)
\(\frac { -8 }{ 15 } =\frac { -8 }{ 15 } \times \frac { 4 }{ 4 } =\frac { -32 }{ 60 } \) 
Now, comparing the numerators − 36, − 42, − 45, − 28 and – 32 we see that
− 28 > − 32 > − 36 > − 42 > − 45
That is, \(\frac { -28 }{ 60 } >\frac { -32 }{ 60 } >\frac { -36 }{ 60 } >\frac { -42 }{ 60 } >\frac { -45 }{ 60 } \)
and so, \(\frac { -14 }{ 30 } >\frac { -8 }{ 15 } >\frac { -3 }{ 5 } >\frac { 7 }{ -10 } >\frac { -15 }{ 20 } \)
Hence, the descending order of the given rational numbers is \(\frac { -14 }{ 30 } ,\frac { -8 }{ 15 } ,\frac { -3 }{ 5 } ,\frac { 7 }{ -10 } ,and\frac { -15 }{ 20 } \) and its reverse order gives the ascending order. Hence the ascending order of the given rational numbers is \(\frac { -15 }{ 20 } ,\frac { 7 }{ -10 } ,\frac { -3 }{ 5 } ,\frac { -8 }{ 15 } ,and\frac { -14 }{ 30 } \) 

\(1.15=\frac { 115 }{ 100 } =\frac { 23 }{ 10 } =1\frac { 3 }{ 20 } \)

\(3.0=\frac { 30 }{ 10 } =\frac { 3 }{ 1 } \)