Advertisements
Advertisements
Question
Find (a + b) ÷ (a – b) if a = `(-3)/5`, b = `2/15`
Sum
Solution
a = `(-3)/5`, b = `2/15`
a + b = `(-3)/5 + 2/15`
= `(-3 xx 3 + 2)/15`
= `(-9 + 2)/15`
= `(-7)/15`
a − b = `(-3)/5 - 2/15`
= `(-3 xx 3 - 2)/15`
= `(-9 - 2)/15`
= `(-11)/15`
(a + b) ÷ (a – b) = `(-7)/15 ÷ (-11)/15`
= `(-7)/15 xx 15/(-11)`
= `7/11`
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find the value of `(-2)/13 ÷ 1/7`.
Evaluate:
`3/4 ÷ (-5/12)`
Evaluate:
`-5 ÷ (- 10/11)`
The product of two rational numbers is -5.If one of these numbers is `(-7)/15`,find the other.
The value of `((-15)/23) ÷ (30/(-46))` is ________
Divide : `(-21)/5` by `(-7)/(-10)`
`3/4 ÷ (5/8 + 1/2)` = __________
`0 ÷ ((-5)/6)` = ______.
Match the following:
| Column I | Column II |
| (i) `a/b ÷ a/b` | (a) `(-a)/b` |
| (ii) `a/b ÷ c/d` | (b) –1 |
| (iii) `a/b ÷ (-1)` | (c) 1 |
| (iv) `a/b ÷ (-a)/b` | (d) `(bc)/(ad)` |
| (v) `b/a ÷ (d/c)` | (e) `(ad)/(bc)` |
What should be divided by `1/2` to obtain the greatest negative integer?
