Question

write down a pair of integers whose sum is -7

Answer 1

Let's take 2 negative integers and check if their sum is positive.

(-4)+(-3) = -4-3 = -7.

So, we can see that the sum if 2 negative integers is negative.

Now, let's try it with a negative and a positive integer.

(-17)+10= -17+10 = -7.

So, we can see that the sum of a negative and a positive integer is also negative.

Now, let's try with 0 and a negative integer.

0+ (-7) =0-7 =-7.

So, here we observe that the sum of 0 and a negative integer is also negative.

Now, let's check with 0 and a positive integer and 2 positive integers.

For 0 and a positive integer:

0+7 =7.

For both positive as positive integers:

3+4 =7.

We can see that the above 2 cases don't show their sum as a negative integer.

Thus, we can conclude that the sum of (-4)+(-3), (-17) +10 and 0+(-7) satisfy the required condition that is their sum should be -7.

Answer 2

Answer:

Step-by-step explanation:

= – 4 + (-3)

= – 4 – 3 … [∵ (+ × – = -)]

= – 7