Question

Hi World ,
I have some questions regarding Integers ch-1 class 7
Please answer to them , It will be a pleasure for me .. Add me as friend too

Q.1 Which of the following is the multiplicative identity for an integer 0 ?
Q.2 Encircle the odd one of the following:

(a) (-1,-2)
(b) (-5,2)
(c) (- 4,1)
(d) (- 9,7)

Q.3 Subtract − 134 from the sum of 38 and − 87.

PLEASE ANSWER ..

Answer 1

Answer:

Hi Mate Here Is Your Answer

Step-by-step explanation:

A) The multiplicative identity of any integer a is a number b which when multiplied with a, leaves it unchanged, i.e. b is called as the multiplicative identity of any integer a if a× b = a.

Now, when we multiply 1 with any of the integers a we get a × 1 = a = 1 × a.

So, 1 is the multiplicative identity for integers.

B). (d) (–9, +7) –1 + (–2) = -3 –5 + 2 = -3 –4 + 1 = -3 –9 + 7 = -2 Hence, (–9, +7) is the odd one.

C) Firstly let us find the sum of 38 and -87. So,

S = 38+(-87) = -49

Now, let's subtract -134 from -49. So,

S'= -49-(-134) = 85

So, the result is 85 when -134 is subtracted from the sum of 38 and -87. Hence, this is the required solution.

Hope It Helps