Find the difference. k/k^2-9k+20 - 5/k^2-9k+20

C

Step-by-step explanation:

Since the denominators are common we can express as a single fraction.

-

= ← factorise the denominator

= ← cancel the common factor (k - 5) on numerator/ denominator

= → C

-3 degrees

step-by-step explanation:

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal