A7B8C9D6Answer: B. 8 Read Explanation: 4−105=k−2010\frac{4-10}{5}=\frac{k-20}{10}54−10=10k−20 −6/5=(k−20)/10-6/5=(k-20)/10−6/5=(k−20)/10 −12=k−20 ⟹ k=8-12=k-2 0\implies{k}=8−12=k−20⟹k=8 Read more in App