You have to first make like terms

**you want the denominator to be 21
Well. Check out @GiannaSmart0 For the answer ! Great
Answer:
replace the x with -3
Step-by-step explanation:
if you ever have f(x) = 'insert equation' and then it says find f('insert number'), you replace what ever variable is after the first 'f' with the number after the second 'f'. hope this helped!
Answer:
Hey! I think I can help.
Parallel lines are lines that can't meet.Perpendicular lines are lines that can meet.
e.)Since the line at 12 and the line at 9 meets then it is a perpendicular line.
c.)Perpendicular line.
a.)Perpendicular line.
b.)Parallel line.
d.)Depending on how they are faced if the ends of the telephone wire meets the second one then it is perpendicular but if not then it is parallel that's if they are in different directions which they can not meet.Thank you for the question
Answer:
6
Step-by-step explanation:
I assume you mean GCF, greatest common factor.
First, write the prime factorizations for each:
18 = 2¹ × 3²
24 = 2³ × 3¹
Next, find what they have in common. Both have a factor of 2¹ and 3¹.
GCF = 2¹ × 3¹
GCF = 6
The greatest common factor is 6.