Find the value of 'm' in the expression 5^m÷5^-3/5^2=5^13
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[5^m÷5^(-3)]/5^2=5^13
or, [5^m÷5^(-3)]= 5^13×5^2= 5^(13+2)
=5^ 15
or, 5^(m+3) =5^ 15
now m+3 = 15
or, m= 15- 3 = 12
or, [5^m÷5^(-3)]= 5^13×5^2= 5^(13+2)
=5^ 15
or, 5^(m+3) =5^ 15
now m+3 = 15
or, m= 15- 3 = 12
Shikhar535:
bro options are a) 12 b) 11 c)10 d) 9
a) is the right answer
yup you're right
thanks
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