Answer:
16
Step-by-step explanation:
I believe you just multiply 4 by 4 !
So it tell us that he is able to get 5 hits out of 7 and to find how much he could make if 210 chances

We solve what can be solved

Then we leave our variable alone

Last we solve

In this case we can see that he could make 147 hits out of 210 bats.
If you're wanting to translate what Emma said it would be..
6/x = -2(x-4.5)
Answer: yes when your adding or subtracting fractions you must find the common denominator between the two before you continue.
Step-by-step explanation:
Example: 2/4+3/2
Find the common denominator. ( in this case the common denominator is 4)
We keep the first fraction as it is cause it has the denominator 4 and we multiply the second fraction by 2 up and down to get a denominator of 4. The equation becomes 2/4+6/4
Now you add the numerators and you got your answer ( don’t forget to simplify)
The answer after adding in this case is 8/4 and when simplified it is 2