Question

what is the multiplicative inverse of -3/4x-5/7

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Answer 1

-3/4×-5/7
=15÷28

Now, the multiplicative inverse of 15÷28 is
28÷15


Verification
15÷28×28÷15=1
15×28÷15×28=1
1÷1=1
1=1
LHS=RHS
Hence, Proved