Advertisements
Advertisements
Question
Evaluate: `- 5/7 - (- 3/8)`
Sum
Solution
`- 5/7 - (- 3/8)`
`- 5/7 + 3/8`
| 2 | 7, 8 |
| 2 | 7, 4 |
| 2 | 7, 2 |
| 7 | 7, 1 |
| 1 |
L.C.M. of 7 and 8 = 2 × 2 × 2 × 7 = 56
`=> (-5 xx 8)/(7 xx 8) + (3 xx 7)/(8 xx 7)`
(∵ L.C.M. of 7 and 8 = 56)
`= (-40 + 21)/56 = (-19)/56`
shaalaa.com
Concept for Problem Solving Using Operations on Rational Numbers
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Express the following rational numbers to the lowest terms: `(-48)/-72`
Add: `(-7)/26 "and" 7/-26`
Subtract : `(-6)/11 "from" (-3)/(-11)`
Subtract:
`(- 6)/25 "from" (-8)/5`
Subtract: `0 "from" (-3)/8`
Subtract: `5/8 "from" (-5)/16`
Divide: `-14 "by" 7/-2`
If 6 identical articles can be bought for ₹ 2 `6/17`. Find the cost of each article.
Evaluate: `7/26 + 2 + (-11)/13`
Evaluate: `-1 + 2/-3 + 5/6`
