Final answer:
The equation 93-3√9 can be simplified to 84.
Step-by-step explanation:
The equation 93-3√9 can be simplified by evaluating the square root of 9, which equals 3. Then we can substitute this value into the equation to get 93-3(3). Simplifying further, we get 93-9 = 84. So the equation can be justified as 93-3√9 = 84.