Check the correct answer:
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First, we solve the fraction expression.
Let's note that within the parentheses in the numerator there is a multiplication exercise, we will put it in parentheses to avoid confusion in the solution.
First we multiply and then we subtract:
Now the exercise obtained in the numerator is:
We arrange the exercise accordingly:
Note that in the denominator of the fraction exercise, the number 0 appears.
Since according to the rules no number can be divided by 0, the exercise has no solution.
No solution
\( 20\div(4+1)-3= \)
Division asks 'how many groups?' But zero groups can't contain anything! It's mathematically impossible, like asking 'What color is invisible?' - the question itself doesn't make sense.
Both and are undefined! Any fraction with zero in the denominator means no solution, regardless of what's in the numerator.
Yes, always! Follow PEMDAS completely to simplify the numerator and denominator separately. Only after simplifying can you determine if division by zero occurs.
Not at all! 'No solution' is a perfectly valid mathematical answer. Some expressions are designed to have no solution - that's the correct answer to choose.
Never! You cannot ignore or skip division by zero. The moment you encounter it, the entire expression becomes undefined. Write 'no solution' and stop there.
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