By what number should 5-1 be multiplied so that the product may be equal to (-7)-1 ?
Let the number 5-1 shlould be multiplied by 
According to the question:
5-1 = (-7)-1
[Using 
-n = 
]
[Using 
]
Therefore 5-1 should be multiplied by 
8
By what number should 5-1 be multiplied so that the product may be equal to (-7)-1 ?
Let the number 5-1 shlould be multiplied by
According to the question:
5-1 = (-7)-1
[Using -n = ]
[Using ]
Therefore 5-1 should be multiplied by