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Properties of Multiplication under Integers

Solve the fol...

Question

Solve the following using suitable property.

$81 \times (- 3) + 81 \times 4$

A

567

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B

81

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C

566

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D

162

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Solution

The correct option is B 81
Distributive property of integers under multiplication states that for any three integers a, b and c:

a × (b + c) = a × b + a × c

So, 81 × (-3) + 81 × 4

= 81 × (-3 + 4)

= 81 × 1

= 81

Answer: (B) 81

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