Question

Is 8/9 the multiplicative inverse of -1 1/8 ? why or why not ?

Answer 1

-1 1/8= -9/8

8/9* (-9/8) = -1

therefore -9/8 is not a multiplicative inverse of 8/9 because product is -1

a * 1/a =1

then 1/a is multiplicative inverse of a