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Exponential and logarithmic equations

# Exponential equations

To solve exponential equations  you need to have equations with comparable exponential expressions on either side of the "equals" sign, so you can compare the powers and solve.

Since the bases are the same, then the only way the two expressions could be equal is for the powers also to be the same. That is:

Solve :

 $9^{\fs2-3x-4}=3^{\fs210}$ Solution: