Advertisements
Advertisements
Question
Evaluate: `(- 7)/6 + 4/-15 + (-4)/-30`
Sum
Advertisements
Solution
`(- 7)/6 + 4/-15 + (-4)/-30`
`=(- 7)/6 + (-4)/15 + (4)/30`
`= (- 7 xx 5)/(6 xx 5) + (-4 xx 2)/(15 xx 2) + (4 xx 1)/(30 xx 1)` (∵ L.C.M. of 6, 15, 30 = 30)
`= (-35)/30 + (-8)/30 + 4/30`
`= (- 35 - 8 + 4)/30`
`= (- 43 + 4)/30 = (-39)/30`
shaalaa.com
Concept for Problem Solving Using Operations on Rational Numbers
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Evaluate: `5/-24 + (- 1)/8 + 3/16`
Subtract: `(- 16)/21 "from" 1`
Evaluate: `2/3 xx -6/7`
Evaluate: `((-8)/9) xx ((-3)/16)`
Multiply: `1 1/6 "and" 18`
Find the cost of `3 1/2` m cloth, if one metre cloth costs ₹325 `1/2`.
Evaluate: `(-6 xx 5/18) - (- 4 2/9)`
Divide: `(-20)/9 "by" (-5)/9`
Evaluate: `(3 5/12 + 1 2/3) div (3 5/12 - 1 2/3)`
Evaluate: `(18/33 xx (-22)/27) - ((13)/25 xx (-75)/26)`
