Answer:
b = 2/5 = 0.4
Explanation:
We know that:
We want to find the value of b, then we need to isolate b in one side of the equation.
First, let's subtract 15 in both sides of the equation so we get:
Now we can multiply both sides by 3*b, so we get:
Now we can divide both sides by -15:
Then:
b = 6/15 = 2/5
b = 2/5 = 0.4