verify the integers ( - 10 ) × { ( - 7 ) + ( - 9 ) } = { ( - 10 ) × ( - 7 ) } + { ( - 10 ) × ( - 9 ) }
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=(-10)× [(-7)+(-9)]=[(-10)×(-7)]+[(-10)×(-9)
=(-10)×[-7-9]=[70]+ [90]
=160=160
=160-160=0
0=0
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