
get rid of -2 by subtracting it from 21

Now you get your answer

Hope this helps! :)
D, sense there are no repeating numbers in the input (Y)
x=0
because you must
determine the undefined range
write all numerators above the common denomonator
multiply the parenthesis
collect the alike terms
remove parenthesis
eliminate the opposites collect the like terms
set the numerator equal to 0
divide both sides by 6
check if thesolution is the defined range
if so then you would find your answer X=0
Answer:
y=-7
Step-by-step explanation:
when it is hohorizontal lile this it is y=-7