Do you have a picture to go with this? I can't help without the picture :(
Answer:
Whenever a-5<0 or a<5
Step-by-step explanation:
So if you have an absolute value, that turns into two equations. The one we care about is -(a-5)=5-a. After distributing the negative through the left side of the equation, you'll get that 5-a=5-a, which is an identity. But you can only say that abs(a-5)=5-a when a-5<0. To see a visual representation of this, graph both sides of the equation in desmos.
Use PEMDAS
1. Parenthesis
2. Exponents
3. Multiplication
4. Division
5. Addition
6. Subtraction
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