Question

show that
$\frac { 16 \times 2 ^ { n - 1 } - 4 \times 2 ^ { n } } { 16 \times 2 ^ { n + 2 } - 2 \times 2 ^ { n + 2 } } = \frac { 1 } { 14 }$
please answer it quickly
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Answer 1

value after simplification is 1/14 which is proven above.