1.

Multiply using associative law: (- 20) × (- 2) × (- 5) × 7

Answer»

(- 20) × (-2) × (-5) × 7 

= (- 20) × [(-2) × (-5)] × 7 

= [(- 20) × 10] × 7 

= – 200 × 7 

= – 1400



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