No because 0 is additive inverse the multiplicative inverse of a number is when you multiply that number by the m. inverse and still get that number.
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It simplifies to 7k = 49 which gives k = 7.
Same as subtracting 6 from 7 = K
-6K+7K=1K or K
k + 6k - 13 = 177k = 30k = 30/7k = 4.2857
-6k + 7k = k