Get expert insights and community-driven knowledge on IDNLearn.com. Discover trustworthy solutions to your questions quickly and accurately with help from our dedicated community of experts.
Answer:
-1
Step-by-step explanation:
The coefficient of a letter simply means what number is in front of that letter
In this case we see that -r doesn't have a number in front of it
But we also know that if a letter has a coefficient of 1 or -1, many don't add it.
So the numerical coefficient of -r is -1.