Answer:
Common difference (d) = -5
Step-by-step explanation:
formula=>
an = a + (n-1)d
=> -8 = 7 + (4-1)d
=> -15 = 3d
=> 3d = -15
=> d = -15/3
=> d = -5
3b(3-b) is the answer
Step by step explanation : take out the most common factor which is 3b
Answer:
32/27
Step-by-step explanation:
