Multiplicative inverse

Explain why the reciprocal of - 1 1/17 is the multiplicative inverse of - 17/18.

Correct answer:

i =  -17/18

Step-by-step explanation:

a=1171=1+171=171 17+1=17181.0588 b=a=1.0588=1718=11711.0588  i=1/b=1/(1.0588)=1817=0.9444

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