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Question

Using some properties of multiplication of integers solve it:625*(-35)+(-625)*65

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Solution

left parenthesis a cross times b right parenthesis plus left parenthesis a cross times c right parenthesis equals a cross times left parenthesis b plus c right parenthesis
625×(-35)+(-625)×65..
625 is common on both side of '+' sign.
so we take it as common and according to the formula given in the beginning we get
625×[(-35) + (-65)]=
625× (-100)= -62500.
hope you understand.aall the best.

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