Answer:
KL = 10
Step-by-step explanation:
JK + KL = JL
2x – 2 + x – 9 = 2x + 8
Combine like terms
3x -11 = 2x+8
Subtract 2x from each side
3x-2x -11 = 2x+8-2x
x-11 = 8
Add 11 to each side
x-11+11 = 8+11
x = 19
KL = x – 9
= 19-9
= 10
............................,,,;,,...............:......
Since you're looking for the unit rate, you can start do this:

And yes,

is also correct, it's just switching around the 15
You can factor this out by thinking of the factors of 56 that have a sum of -1. 7 and 8 are factors of 56 and to get a sum of -1, 8 should be negative. 7 + -8 = -1
So

factored out is (y+7x)(y-8x)
We can check this using FOIL
F = (y)(y) =

O = (y)(-8x) = -8xy
I = (7x)(y) = 7xy
L = (7x)(-8x) =


Combine like terms