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Replace the blank with an integer to make it a true statement. (a) (- 3) x = 27 Exercise 1.3 9

9. Replace the blank with an integer to make it a true statement.
                    (a) (–3) × _____ = 27            (b) 5 × _____ = –35
                    (c) _____ × (– 8) = –56         (d) _____ × (–12) = 132

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(a)Given,  (-3) \times \_\_\_\_\ = 27

The product is positive, therefore there should be even number of negative integers.

(-3) \times \underline{(-9)}= 27            

(b) Given, 5 \times \_\_\_\_\_ \ = -35
The product is negative, therefore there should be odd number of negative integers.

5 \times \underline{(-7)} = -35

(c) \_\_\_\_ \ \times (- 8) = -56         

The product is negative, therefore there should be odd number of negative integers.

\underline{7}\times (- 8) = -56

(d) \_\_\_\ \times (-12) = 132

The product is positive, therefore there should be even number of negative integers.

\underline{(-11)} \times (-12) = 132

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