Math 12 (Logs)
posted by Anonymous on .
Solve:
3^(2a+3)=7^(a4)
Please Help and Thank you

3^(2a+3) = 7^(a4).
(2a+3)*Log3 = (a4)*Log7.
Divide both sides by Log3:
2a+3 = 1.771(a4).
2a+3 = 1.771a7.085.
2a1.77a = 7.0853.
0.23a = 10.085.
a = 43.85.