Algebra Examples

$16 = 64^{x}$

Step 1

Rewrite the equation as $64^{x} = 16$ .

$64^{x} = 16$

Step 2

Create equivalent expressions in the equation that all have equal bases.

$4^{3 x} = 4^{2}$

Step 3

Since the bases are the same, then two expressions are only equal if the exponents are also equal.

$3 x = 2$

Step 4

Divide each term in $3 x = 2$ by $3$ and simplify.

Tap for more steps...

Step 4.1

Divide each term in $3 x = 2$ by $3$ .

$\frac{3 x}{3} = \frac{2}{3}$

Step 4.2

Simplify the left side.

Tap for more steps...

Step 4.2.1

Cancel the common factor of $3$ .

Tap for more steps...

Step 4.2.1.1

Cancel the common factor.

$\frac{3 x}{3} = \frac{2}{3}$

Step 4.2.1.2

Divide $x$ by $1$ .

$x = \frac{2}{3}$

Step 5

The result can be shown in multiple forms.

Exact Form:

$x = \frac{2}{3}$

Decimal Form:

$x = 0.\overline{6}$