The answer is K= 7 because
-5-7=-12
If the question is 7 x 200+50+6 it equals 1792
1000 grams = 1 kilograms.....
the average mass of cat is 5000 grams, so if you convert this into KG then the answer would be 5 kg because if 1000*5 = 5000 which equals to 5 kg.....hope this helps :)