SOLUTION: How do you solve: 9 to the power of m+3 equals 81

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Question 777603: How do you solve: 9 to the power of m+3 equals 81
Found 2 solutions by solver91311, MathLover1:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Since you know that , . Solve for

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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
9%5E%28m%2B3%29=81.......you can write 81 as 9%5E2
9%5E%28m%2B3%29=9%5E2......here you have same bases, then exponents are same too
%28m%2B3%29=2...solve for m
m=2-3
m=-1
check:
9%5E%28m%2B3%29=81=> 9%5E%28-1%2B3%29=81=>9%5E2=81=>81=81