Advertisements
Advertisements
Question
Evaluate:
`(2xx1/4) - ((-18)/7 xx (-7)/15)`
Solution
`= ((2xx1)/(1xx4)) - (((-18)xx(-7))/(7xx15))`
`= ((1xx1)/(1xx2)) - (((-18)xx(-1))/(1xx15))`
`= 1/2 - 18/15`
| 2 | 2, 15 |
| 3 | 1, 15 |
| 5 | 1, 5 |
| 1, 1 |
LCM of 2 and 15 is 2 x 3 x 5 = 30
`= (1xx15)/(2xx15) - (18xx2)/(15xx2)`
LCM of 2 and 15 = 30
`= (15-36)/30 = (-21)/30 = (-7)/10`
APPEARS IN
RELATED QUESTIONS
Find `(-3)/8 - 7/11`.
Subtract:
`4/9` from `(-5)/9`
Evaluate:
`(-4)/9 - 2/(-3)`
Subtract:
`(-5)/8` from `(-13)/16`
Which rational number should be subtracted from `(-5)/6` to get `4/9`?
The sum of the two rational numbers is -6, If one of them is `(-8)/5`, Find the other.
Evaluate:
`2/3+(-4)/5-1/3-2/5`
`(-2)/9 - 7/9` = ______.
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find the rational number which subtracted from y gives z.
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find x – (y + z).
