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a-3/7 - 3-9/21
Group like terms:
a - 3/7- 9/21- 3
Cancel 9/21 to 3/7:
a-3/7-3/7-3
Combine the fractions:
a- 6/7- 3
Convert element to fraction:
3*7/3 - 6/7
Since the denominators are equal combine the fractions:
-3*7-6/7
-3*7-6= -27
-27/7
Apply the fraction rule:
a- 27/7
Your Answer Is a - 27/7
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