Subtract the fractions and simplify the answer 7 8/9-5 3/5

Question

Mathematics

Julien Dean

20 August, 21:17

Subtract the fractions and simplify the answer 7 8/9-5 3/5

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Answers (1)

Know the Answer?

Xander Oneill · Answer 1

One way in which to do this problem would involve subtracting 5 from 7 (result: 2) and then subtracting 3/5 from 8/9.

To subtract 3/5 from 8/9, you'd need to find the lowest common denominator (LCD) of 3/5 and 8/9, convert both fractions to have this LCD, and then subtract.

The LCD is (5) (9) = 45. Then 8/9 and 3/5 become 40/45 and 27/45.

Subtracting 27/45 from 40/45 results in the fraction 13/45.

Then the full solution is 2 13/45.

You could also do this problem by converting 7 8/9 and 5 3/5 into improper fractions:

71/9 - 28/5. Again, the LCD is 45. Can you rewrite both fractions with 45 as the common denominator and then perform the subtraction?