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Question
Carry out the following subtraction involving a rational number.
`7/11 - 3/7`
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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
Find the sum:
`(-9)/10 + 22/15`
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`5/(-26) "and" 8/39`
Evaluate:
`3/7 + (-4)/9 + (-11)/7 + 7/9`
Evaluate:
`4/7 +0 + (-8)/9 + (-13)/7 + 17/9`
Fill in the Blank
If `a/b` is additive inverse of `(-c)/d`, then `(-c)/d` is additive inverse of ------.
Carry out the following addition of a rational number.
`2 3/11 + 1 3/77`
Carry out the division of rational number:
`5 div 2/5`
Find the sum: `7/5 + 3/5`
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find the rational number which when added to x gives y.
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find x + (y + z).
