find the value of m for which 5^2m ÷5^3=5^7
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5^2m÷5^3=5^7
5^2m-3 =5^7 {a^n÷a^m = a^n-m ,by using this identity}
on equating both the sides,
2m-3 = 7
2m = 7+3
m = 10÷2
m = 5
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