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Maths Exercices
Exponents: solve for the variable

Solving exponential equations of the same base.

Step 1. Ignore the bases, and simply set the exponents equal each other
Step 2. Solve for the variable

Solve for x

4x=49
x=9

Solve for x

4x+1=49
x+1=9

x=9-1
x=8

Solving exponential equations of with unlike bases.

Step 1. Rewrite the bases as powers of a common base
Step 2. Substitute the rewritten bases into original equation
Step 3. Simplify exponents
Step 4. Solve like an exponential equation of like bases


Solve for x

43=2x
(22)3=2x

26=2x
6=x
x=6