He multiplied rather than dividing.

Hope this helps!
Answer:
a = -12
Remember that when a variable is times with a number, you <u>divide</u> the number on both sides.
When a variable is divided by a number, you <u>multiply</u> the number on both sides.
Hope this helps you. Thank you !!
Answer:
it is 27
Step-by-step explanation:
Answer: 21 is your range
hope this helps
Step-by-step explanation:
To find the range, subtract the smallest number in the set from the largest