All you have to do is solve for x. See the following steps below.
Step 1. Subtract
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from both sides

Step 2. Simplify

to

How do you write The difference between 7 and the product 3x is 23
3x -7 =23
Answer:
5
Step-by-step explanation:
You start with each membership for each gym as your starting point, then you add the personal sessions to that number.
Silver Gym: 25 65 105
Fit Factor: 75 105
As you can see, it will take Sarah 5 sessions to have both costs equal