Find value of m so that (–3)m- 1 X (–3)5 = (–3)7
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Step-by-step explanation:
(−3)m+1×(−3)5=(−3)7
(−3)m+1+5=(−3)7
(−3)m+6=(−3)7
On both the sides powers have the same base different from 1 and -1, so their exponents must be equal.
Therefore, m + 6 = 7
or m = 7 - 6 = 1
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