Answers

2015-04-05T21:55:22+05:30
TO ADD AND SUBTRACT RATIONAL NUMBERS, JUST FIND THE LCM OF THE DENOMINATORS OF THE GIVEN NUMBERS AND SOLVE THEM AS WE DO IN CASE OF FRACTIONS.
EG-
      = -1/2 + 5/8 (LCM IS 8)
       = -4+5/8
        = 1/8
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2015-04-05T21:57:39+05:30

To add or subtract the rational numbers, we need to make the denominator same, and then add or subtract the numerators. The denominator is written in the bottom.

for ex- 4/5 + 4/2

= 8/10 + 20/10

= 28/10

= 14/5

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