Determine the Sum of the Following Geometric Series: 1 - $\frac { 1 } { 2 ^ { 3 } }$

Short Answer

Determine the sum of the following geometric series: 1 - $\frac { 1 } { 2 ^ { 3 } }$ + $\frac { 1 } { 2 ^ { 6 } }$ - $\frac { 1 } { 2 ^ { 9 } }$ + $\frac { 1 } { 2 ^ { 12 } }$ - ... .
Enter just a reduced fraction of form $\frac { a } { b }$ .