Question

4. Verify the following:
(i) 18 x [9 +(-7)] = 18 x 9 +18 X (-7)
(ii) (-13) x [(-6) + (-19)]= (-13) X (-6) + (-13) X (-19)​

Answer 1

Answer:

Step-by-step explanation:

18 × [9-7] = 162 - 126

36 = 36

hence verified

Answer 2

Hey mate!!

Answer:

First solve the brackets whenever you do simplification. It makes the question easy.

Step-by-step explanation:

(i) 18× [ 9 + ( -7 )] = 18 × 9 +18 × ( -7 )

=> 18 × [ 9 - 7 ] = 18 × 9 + 18 × ( -7)

=> 18 × 2 = 18 × 9 - 126

=> 36 = 162 - 126

=> 36 = 36

Hence, verified

(ii) ( -13) × [(-6) + (-19)] = (-13) × (-6) + ( -13) × ( -19)

=> ( -13) × [ -6 - 19 ] = -13 × ( -6) -13 × ( -19)

=> ( -13) × ( -25 ) = 78 - ( -247)

=> 325 = 78 + 247

=> 325 = 325

Hence, verified

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