To solve the equation b - 0.2b = 4.92, we can combine the like terms on the left side of the equation:
b - 0.2b = 4.92
0.8b = 4.92
Next, we can isolate b by dividing both sides of the equation by 0.8:
0.8b/0.8 = 4.92/0.8
b = 6.15
Therefore, the solution to the equation is b = 6.15.
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