Answer: C.
Step-by-step explanation:
Answer:
C
x=-2
x+6=4
x-6=-6+4
the answer is C which is nine
Greatest common factor of 6x and 9y is 3.
6x + 9y = 3(2x + 3y)
:::::
Greatest common factor of 3c and 11c is c.
3c + 11c = (3+11)c