Question

सिक्स प्लस माइनस टू ए प्लस टू इंटिगर्स व्हाट इज द आंसर​

Answer 1

Answer:

Let's return to the first example from the previous page: "9 – 5" can also be written as "9 + (–5)". Graphically, it would be drawn as "an arrow from zero to nine, and then a 'negative' arrow five units long":

← swipe to view full image →

adding a negative five

...and you get "9 + (–5) = 4".

Now look back at that subtraction you couldn't do: 5 – 9. Because you now have negative numbers off to the left of zero, you also now have the "space" to complete this subtraction. View the subtraction as adding a negative 9; that is, draw an arrow from zero to five, and then a "negative" arrow nine units long:

← swipe to view full image →

5 - 9 = -4

...or, which is the same thing:

← swipe to view full image →

5 + (-9) = -4

Then 5 – 9 = 5 + (–9) = –4.