Answer
3/5
Work Step by Step
To add or subtract fractions, we must have a common denominator. Because 3/10 and 9/10 already have the same denominator, 10, we can subtract the numerators:
$ \frac{9}{10} - \frac{3}{10} = \frac{6}{10}=\frac{3}{5}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Skills Handbook - Adding and Subtracting Fractions - Exercises - Page 791: 15
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