Try to use mathway its very helpful
<span> x/2 - 3 = 7
Add 3 to both sides
x/2=10
Multiply 2 on both sides
Final Answer: B. 20</span>
If looking for velocity or speed or miles per hour:
V= 3,360mi/ 6hrs
V= 560mph
this becomes (n+7) x (n+7) which becomes
n^2 +14n +49
