Answer:
7. -37/36 or -1 1/36
8. -3/10
9. 1/24
10. -118/21 or -5 13/21
11. 97/12 or 8 1/12
12. 49/8 or 6 1/8
Step-by-step explanation:
To subtract fractions, they must have the same denominator. The common denominator will be the LCM (lowest common multiple) of the two denominators. Then, combine the fractions and simplify.
7.  Find a common denominator
  Find a common denominator
 
 
 
 
 Combine the fractions
   Combine the fractions
 Answer. Already in lowest terms.
    Answer. Already in lowest terms.
 Keep a negative number. 37 goes into 36 one time, leaving 1 remainder (becomes numerator)
 Keep a negative number. 37 goes into 36 one time, leaving 1 remainder (becomes numerator)
8.  Find a common denominator
 Find a common denominator
 
 
 
 
 Combine the fractions
 Combine the fractions
 Answer in simplest form.
 Answer in simplest form.
9.  Find common denominator
 Find common denominator
 
 
 
 
 Combine the fractions
 Combine the fractions
 Answer in simplest form
 Answer in simplest form
10.  Translate to improper fraction
 Translate to improper fraction
 Multiplied each whole number with base, added to numerator
 Multiplied each whole number with base, added to numerator
 Found common denominator
 Found common denominator
 Combined fractions
 Combined fractions
 Answer in improper form
 Answer in improper form
 Answer as a mixed number
 Answer as a mixed number
11.  Convert to improper fraction
 Convert to improper fraction
 Two minuses make a plus
 Two minuses make a plus
 Find common denominator
 Find common denominator


 Combined fractions
 Combined fractions
 Answer as improper fraction
 Answer as improper fraction
 Answer as mixed fraction
 Answer as mixed fraction
12.  Convert to improper fraction
 Convert to improper fraction

 Find common denominator
 Find common denominator

 Combined fractions
 Combined fractions
 Answer as improper fraction
 Answer as improper fraction
 Answer as mixed number
 Answer as mixed number