Is means equal in mathematics
of means multiplication
and if we are solving for x then we can translate your equation to:

Simplifying that more, we get:

And your final answer is:
Answer:
w=4
Step-by-step explanation:
7-16=-9
39-x=-9
39+9=48
39-48=-9
x=48
48/12=4
w=4
One may note that (1.6 , 6) is just another way to say x = 1.6 when y = 6.
and that (8 , y) is another way to say x = 8 and y is who knows.

Answer:
15
Step-by-step explanation:
When b = 9,
=> 3a + 9 = 54
=> 3a + 9 - 9 = 54 - 9
=> 3a = 45
=> 3a/3 = 45/3
=> a = 15
Therefore, when b is 9, a is 15
The answer to your question is 45 miles / 1 hour * 5280 feet / 1 mile * 1 hour / 3660 seconds =
45 * 5280 * 1 / 1 * 1 * 3660 =
2737600 feet / 3660 second =
64.918