Advertisements
Advertisements
Question
Find (a + b) ÷ (a – b) if a = `1/2`, b = `2/3`
Advertisements
Solution
a = `1/2`, b = `2/3`
a + b = `1/2 + 2/3`
= `(1 xx 3 + 2 xx 2)/6`
= `(3 + 4)/6`
= `7/6`
a − b = `1/2 - 2/3`
= `(1 xx 3 - 2 xx 2)/6`
= `(3 - 4)/6`
= `(-1)/6`
(a + b) ÷ (a − b) = `7/6 ÷ (-1)/6`
= `7/6 xx 6/(-1)`
= −7
APPEARS IN
RELATED QUESTIONS
Find the value of `(-7)/12 ÷((-2)/13)`.
Evaluate:
`- 5/12 ÷ 1/16`
Cost of `3 2/5` metre of cloth is ₹`88 1/2.` what is the cost of 1 metre of cloth?
The product of two rational numbers is -5.If one of these numbers is `(-7)/15`,find the other.
Divide : `(-21)/5` by `(-7)/(-10)`
`3/4 ÷ (5/8 + 1/2)` = __________
The reciprocal of `1/2` is ______.
If `p/q` is a rational number and m is a non-zero common divisor of p and q, then `p/q = (p ÷ m)/(q ÷ m)`.
Simplify:
`13/11 xx (-14)/5 + 13/11 xx (-7)/5 + (-13)/11 xx 34/5`
Find the reciprocal of the following:
`20/51 xx 4/91`
