Question

Simplyfy :
$16 \times {2}^{n + 1 } - 4 \times {2}^{n} \div 16 \times {2}^{ n + 1} - 2 \times {2}^{n + 2}$
the ans is 7/6 .I want to know the formula.Please fast

Answer 1

Answer:

sorry I study in class 7