The sum 12

The sum of 3 mixed numbers is 20 13/15. two of the numbers are 6 1/3 and 7 5/6. what is the third number?

Correct answer:

c =  6.7

Step-by-step explanation:

s=201315=20+1315=20 15+1315=3131520.8667 a=613=6+13=6 3+13=1936.3333 b=756=7+56=7 6+56=4767.8333  s=a+b+c  c=sab=20.86676.33337.8333=6710=6710=6.7



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