Advertisements
Advertisements
Question
Evaluate: `(8/15 xx (-25)/16) + ((-18)/35 xx 5/6)`
Advertisements
Solution
`(8/15 xx (-25)/16) + ((-18)/35 xx 5/6)`
`=> (8 xx (-25))/(15 xx 16) + (- 18 xx 5)/(35 xx 6)`
`=> (1 xx (-5))/(3 xx 2) + (-3 xx 1)/(7 xx 1)`
`=> (-5)/6 - 3/7`
| 2 | 6, 7 |
| 3 | 3, 7 |
| 7 | 1, 7 |
| 1, 1 |
L.C.M. of 6 and 7 = 2 × 3 × 7 = 42
(∵ L.C.M. of 6 and 7 = 42)
`=> (-5 xx 7)/(6 xx 7) + (3 xx 6)/(7 xx 6)`
`=> (-35 - 18)/42 = (- 53)/42`
APPEARS IN
RELATED QUESTIONS
Find x, such that: `(-27)/"x" = 9`
Arrange the given rational numbers in descending order:
`5/8, 13/-16 "and" (-7)/12`
Fill in the blank:
`5/8` and `-3/10` are on the ________ side of zero.
Evaluate: `-2 + 2/5 + (-2)/15`
Subtract : `(-2)/15 "from" (-8)/(15)`
Divide: `-7 "by" (- 14)/5`
By what number should `(-3)/8` be multiplied so that the product is `(-9)/16`?
The sum of two rational numbers is -5. If one of them is `(-52)/25`, find the other.
What rational number should be added to `(- 3)/5` to get 2?
Evaluate: `(18/33 xx (-22)/27) - ((13)/25 xx (-75)/26)`
