Which of the following is different from the others
a. 20 + (-25)
b. (-37) - (-32)
c. (-5) × (-1)
d. (45) ÷ (-9)

Solution:

To determine which of the above listed one option is different from the other we will solve the given expressions individually using integer properties.

a) 20 + (-25) = - 5

b) (-37) - (-32) = -5

c) (-5) × (-1) = 5

d) (45) ÷ (-9) = -5

Therefore, on simplifying individual options we observe that the option (c) (-5) × (-1) = 5 gives the different value of integer from the other options.

✦ Try This: Simplify (-20) + 9 × (-5). Does it represent a negative integer value?

Using the integer rules and the BODMAS rules we can determine the value of (-20) + 9 × (-5). Thus can examine whether it represents a negative integer value or a positive integer value

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 1

NCERT Exemplar Class 7 Maths Chapter 1 Exercise Problem 22

Which of the following is different from the others: 20 + (-25), (-37) - (-32), (-5) × (-1), (45 ) ÷ (- 9)

Summary:

According to the integer rules and the BODMAS rules, on simplifying individual options we observe that the option (c) (-5) × (-1) = 5 gives the different value of integer

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