Question

EXERCISE 1.2
1. Write down a pair of integers whose:
(a) sum is - 7 (b) difference is -10
(c) sum is 0​

Answer 1

$\green{ \underline{ \boxed{ \odot\mid{ \bf{AnSwEr :-}}}}}$

a) $\boxed{\bf{Sum \: is \: -7 -}}$

⇝ (9) + (-2)

Solving:

$\rightarrow$ -9 - (-2)

$\rightarrow$ -9 + 2

$\rightarrow$ -7

⠀⠀⠀⠀⠀⠀⠀ ⠀ ⠀

b) $\boxed{\bf{Difference \: is \: -10 -}}$

⇝ (-4) - (+6)

Solving:

$\rightarrow$ -4 - (+6)

$\rightarrow$ -4 - 6

$\rightarrow$ -10

⠀⠀⠀⠀⠀⠀⠀ ⠀ ⠀

c) $\boxed{\bf{Sum \: is \: 0 -}}$

⇝ (10) + (-10)

Solving:

$\rightarrow$ 10 + (-10)

$\rightarrow$ 10 - 10

$\rightarrow$ 0

______________________________________

Answer 2

${\bf\underline\green{Given~:-}}$

a) Sum is - 7 -

• $\large\pink\implies$ (9) + (-2)

${\bf\underline\green{To find :-}}$

• $\large\blue\implies$ -9 - (-2)

• $\large\red\implies$ -9 + 2

• $\large\orange\implies$ -7

b) Difference is -10-

• $\large\pink\implies$ (-4) - (+6)

${\bf\underline\green{Solution~:-}}$

• $\large\blue\implies$ (-4) - (+6)

• $\large\red\implies$ -4 - 6

• $\large\orange\implies$ -10

c) Sum is 0-

• $\large\pink\implies$ (10) + (-10)

${\bf\underline\green{Solved~:}}$

• $\large\blue\implies$ 10 - (-10)

• $\large\red\implies$ 10 - 10

• $\large\orange\implies$ -0

Hence Proved !!

• Your answer is 0 $\large{\bf\green{✓}}$