We have to mutiply factor -2/3 times every agument from the parenthesis.

/+8b
8+6b=-4 /-8
6b=-12 /:6
b=-2 - its the answer
Answer:
sample 1: 75
sample 2: 86
Step-by-step explanation:
It’s called the associative law you can add numbers in any order you want
4 and -2.5
You can get this by first factoring the equation.
(2x + 5)(x - 4)
Then set both equal to zero and solve individually.