HELP ITS DUE REALLY SOON!!!

Step-by-step explanation:
(8.4 * x * 10¹⁰) / (3 * x * 10⁷)
= (8.4/3) * (x/x) * (10¹⁰/10⁷)
= 2.8 * 1 * 10³
= 2.8 * 10³.
Answer:
[tex] \frac{8.4 \times {10}^{10} }{3 \times {10}^{7} } \\ = \frac{8.4}{3} \times \frac{ {10}^{10} }{ {10}^{7} } \\ = 2.8 \times {10}^{3} \\ = \boxed{2800}[/tex]