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Simplify: 5/4-7/6-(-2)/3 (ii) (-2)/5-(-...

Simplify: `5/4-7/6-(-2)/3` (ii) `(-2)/5-(-3)/(10)-(-4)/7`

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Simplifying:
(i)`5/4-7/6-(-2)/3`
`=5/4-7/6+2/3`
Taking LCM, we get LCM as `12`.
`=(15-14+8)/12`
`=9/12`
Dividing numerator and denominator by `3`.
`=3/4`
Hence, we get the answer as `3/4`.

Simplifying:
(ii)`(-2)/5-(-3)/10-(-4)/7`
`=-2/5+3/10+4/7`
Taking LCM, we get LCM as `70`.
`=(-28+21+40)/70`
`=33/70`
Hence, we get the answer as `33/70`.
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RD SHARMA-RATIONAL NUMBERS-All Questions
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  2. Simplify: (i)(-3)/2+5/4-7/4 (ii) 5/3-7/6+(-2)/3

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  3. Simplify: 5/4-7/6-(-2)/3 (ii) (-2)/5-(-3)/(10)-(-4)/7

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  13. Multiply: -3/5b y-4/7 (ii) -(15)/(11)b y\ 7

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