Question

please give me step by step ​

Answer 1

$\frac{15×2^n×2² - 5×2^n×2³}{5×2^n - 3×2^n}$

$\frac{3×5×2^n×2² - 5×2^n×2³}{2 × 2^n}$

$\frac{5×2^n×2²(3 - 2)}{2^n×2}$

$\frac{5 × 2^n × 2²}{2^n × 2}$

$(5 × 2¹)$

$(5 × 2)$

$10$