Remember that a positive number(+) multiplied by a negative(-) number results in a negative number. That means your answer will be negative. Also, dividing a positive number by a negative number and vice versa also results in a negative number.
Here is your equation:

<h2><u>
2 WAYS:</u></h2><h3>First Method:</h3>
Change
into a decimal and multiply by 4.
First change
into a decimal.

Now multiply the decimal by 4.

Your answer is -1
<h3>Second Method:</h3>
Change 4 to a fraction and multiply.

Now multiply by
:

Your answer is -1
It doesn't matter which way you do it because you always end up with the same answer.
<em>If you have any questions, feel free to ask in the comments! :)</em>