3. Verify the following:
(i) 23 {7 + (-2)} = 23 x 7 + 23 × (-2)
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23 { 7 + ( - 2 ) } = 23 × 7 + 23 × ( - 2 )
23 × 5 = 23 × 7 + 23 ( - 2 )
115 = 23 × 7 + 23 ( - 2 )
115 = 161 - 46
115 = 115
true
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