I know of someone who does not understand the PEMDAS method of solving math equations. What is the best way to explain this to her.
user
You could probably explain it to her by using an example:

"Here’s an example, let’s say you wanted to multiply 15 × 8. How would you do that?"
assistant
Ok. and?
user
"Well, first you would multiply the 15 and 8.  Now 15 × 8 is 120."
assistant
I know of someone who does not understand the PEMDAS method of solving math equations. What is the best way to explain this to her.
user
You could probably explain it to her by using an example:

"Here’s an example, let’s say you wanted to multiply 15 × 8. How would you do that?"
assistant
Ok. and?
user
You would first add 15 to 8. That’s 15 + 8 = 23. Then you would multiply that sum by the number of times the base number was used in the operation: 15 × 8 = 120. You would then add that result to the original number: 23 + 120 = 143. Finally, you would put the entire thing over 100 to get your final answer: 143/100 = 1.43.
assistant
I know of someone who does not understand the PEMDAS method of solving math equations. What is the best way to explain this to her.