Answer:
B = 60
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
4/5b+6=9/10b
Step 2: Subtract 9/10b from both sides.
4/5b+6-9/10b=9/10b-9/10b
-1/10b+6=0
Step 3: Subtract 6 from both sides.
-1/10b+6-6=0=6
-1/10b=-6
Step 4: Multiply both sides by 10/(-1).
(10/-1)*(-1/10b)=(10/-1)*(-6)
