What number should be added to –5/7 to get –2/3?

 Let's call the number we need to add "x".

We want to find x such that:

-5/7 + x = -2/3

To solve for x, we can start by getting rid of the denominators by multiplying both sides of the equation by the least common multiple of 7 and 3, which is 21:

21(-5/7 + x) = 21(-2/3)

Simplifying both sides:

-15 + 21x = -14

Adding 15 to both sides:

21x = 1

Dividing both sides by 21:

x = 1/21

So the number that should be added to -5/7 to get -2/3 is 1/21.


Comments

Popular posts from this blog

खरराटा क्यों आता है ? इसे बंद करने का क्या उपाय है ?

समुद्र में ज्वार भाटे क्यों आंतें है?

What is the term for a curve symmetric to the origin?