What's the multiplicative inverse of ?
The inverse is . If we multiply this by the initial fraction, , we get 1. Any number multiplied by its multiplicative inverse equals 1.
What's the multiplicative inverse of -4?
The inverse of -4 is -1/4. If we multiply these two numbers together, we get 1 because any number multiplied by its inverse is 1.
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?
. If we multiply this by the initial fraction,