Q12 of 49 Page 12

If x = , find the value of x-1.

X =

On using, [Using -n = ], we get, 

[Using ]

x = 25

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10

Find the value of m for which 5m ÷ 5-3 = 55.

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By what number should (-15)-1 be divided so that the quotient may be equal to (-5)-1?

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By what number should be divided so that the quotient may be?