Final answer:
To find the certain number when subtracting 6.4 from it, we solve the equation x - 6.4 = 55.94 by isolating 'x'. The answer is x = 62.34.
Step-by-step explanation:
To solve the subtraction problem, we need to find the certain number when subtracting 6.4 from it gives us a result of 55.94.
Let's denote the certain number as 'x'.
The subtraction equation can be written as: x - 6.4 = 55.94
To isolate 'x', we need to get rid of the subtracted 6.4 on the left side of the equation. We can do this by adding 6.4 to both sides:
x - 6.4 + 6.4 = 55.94 + 6.4
x = 62.34
Therefore, the certain number is 62.34.