If ( − 5 ) − 4 × ( − 5 ) 8 ( − 5 ) − 1 = ( − 5 ) m , find m.
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5 m ÷5 −3 =5 5
⇒5 m ÷ 5 31 =5 5
⇒5 m ×5 l3 =5 5
⇒5 m+3 =5 5
⇒m+3=5
⇒m=5−3=2
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