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Question
Carry out the following subtraction involving a rational number.
`7/11 - 3/7`
Solution
`7/11 - 3/7`
Now, LCM of 11 and 7 is 77.
`7/11 - 3/7`
`= (7 xx 7)/(11 xx 7) - (3 xx 11)/(7 xx 11)`
`= 49/77 - 33/77`
`= (49 - 33)/77`
`= 16/77`
RELATED QUESTIONS
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`5/(-26) "and" 8/39`
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`(2/(-3) xx 5/4) + (5/9 xx 3/(-10))`
Carry out the following addition of a rational number.
`2 3/11 + 1 3/77`
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`13/36 - 2/40`
Carry out the following subtraction involving a rational number.
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Write the multiplicative inverse.
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Solve:
`5/12 + 7/16`
Complete the following table by finding the sums:
| + | `-1/9` | `4/11` | `(-5)/6` |
| `2/3` | |||
| `-5/4` | `(-39)/44` | ||
| `-1/3` |
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find x + (y + z).
What should be added to `(-1)/2` to obtain the nearest natural number?
