Advertisements
Advertisements
Question
Add: `1/-18 "and" 5/-27`
Sum
Solution
`1/-18 "and" 5/-27 = (-1)/18 + (-5)/27`
`= (- 1 xx 3)/(18 xx 3) + (- 5 xx 2)/(27 xx 2)`
(∵ L.C.M. of 18 and 27 = 54)
`= (- 3)/54 + (-10)/54`
`= ((- 3) + (-10))/54 = (- 3 - 10)/54 =(- 13)/54`
shaalaa.com
Concept for Problem Solving Using Operations on Rational Numbers
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Compare: `1/4` and 0
Arrange the given rational numbers in descending order:
`5/8, 13/-16 "and" (-7)/12`
Add: `(-4)/9 "and" 2/9`
Subtract: `(- 16)/21 "from" 1`
Evaluate: `2 14/25 xx ((-5)/16)`
Multiply: `5 1/8 "and" -16`
Find the cost of `3 1/2` m cloth, if one metre cloth costs ₹325 `1/2`.
Evaluate: `(11/-9 xx 21/44) + ((-5)/9) xx (63/-100)`
A bus is moving with a speed of 65 `1/2` km per hour. How much distance will it cover in 1 `1/3` hours.
What rational number should be subtracted from `5/8` to get `8/5`.