Advertisements
Advertisements
Question
Evaluate: `- 2/3 - ((- 5)/7)`
Sum
Advertisements
Solution
`- 2/3 - ((- 5)/7)`
`=> - 2/3 + 5/7`
| 3 | 3, 7 |
| 7 | 1, 7 |
| 1, 1 |
L.C.M. of 3 and 7 = 3 × 7 = 21
`=> (-2 xx 7)/(3 xx 7) + (5 xx 3)/(7 xx 3)`
(∵ L.C.M. of 3 and 7 = 21)
`= (-14 + 15)/21 = 1/21`
shaalaa.com
Concept for Problem Solving Using Operations on Rational Numbers
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find x, such that: `(- 48)/"x" = 6`
Express the following rational number in the standard form. `(-7)/-20`
Evaluate: `(-2)/5 + 3/5 + (-1)/5`
Evaluate: `(- 7)/6 + 4/-15 + (-4)/-30`
Evaluate: `- 2/3 + 5/2 + 2`
Evaluate: `2/3 xx -6/7`
Multiply: `2 1/14 "and" -7`
Evaluate: `((-4)/5 xx 3/2) + (9/-5 xx 10/3) - ((-3)/2 xx (-1)/4)`
Evaluate: `7/-26 + 16/39`
Evaluate:
`((-13)/7 xx (- 35)/39) - ((-7)/45 xx (9)/14)`
