Advertisements
Advertisements
प्रश्न
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`7/(-18) "and" 8/27`
Advertisements
उत्तर
`7/(-18) + 8/27`
=`(-7xx3)/(18xx3) + (8xx2)/(27xx2)`
| 2 | 18, 27 |
| 3 | 9, 27 |
| 3 | 3, 9 |
| 3 | 1, 3 |
| 1, 1 |
LCM of 18 and 27 = 2 x 3 x 3 x 3 = 54
= `(-21 + 16)/54 = -5/54`
Which is a rational number.
APPEARS IN
संबंधित प्रश्न
Add, the pair of rational numbers, given below, and show that their addition (sum) is also a rational number
`(-5)/8` and `3/8`
Evaluate:
`3/7 + (-4)/9 + (-11)/7 + 7/9`
Evaluate:
`4/7 +0 + (-8)/9 + (-13)/7 + 17/9`
Write the Additive Inverse(Negative) of : `(-7)/5`
Write the Additive Inverse(Negative) of : 1
Write the multiplicative inverse.
7
Add: `2 1/7 + 3 8/14`.
Find the sum: `-4 2/3 + 7 5/12`
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).
