Solve for x 10x+15=9(9)

$10 x + 15 = 9 (9)$

Step 1

Multiply $9$ by $9$ .

$10 x + 15 = 81$

Step 2

Move all terms not containing $x$ to the right side of the equation.

Subtract $15$ from both sides of the equation.

$10 x = 81 - 15$

Subtract $15$ from $81$ .

$10 x = 66$

Step 3

Divide each term in $10 x = 66$ by $10$ and simplify.

Divide each term in $10 x = 66$ by $10$ .

$\frac{10 x}{10} = \frac{66}{10}$

Simplify the left side.

Cancel the common factor of $10$ .

Cancel the common factor.

$\frac{10 x}{10} = \frac{66}{10}$

Divide $x$ by $1$ .

$x = \frac{66}{10}$

Simplify the right side.

Cancel the common factor of $66$ and $10$ .

Factor $2$ out of $66$ .

$x = \frac{2 (33)}{10}$

Cancel the common factors.

Factor $2$ out of $10$ .

$x = \frac{2 \cdot 33}{2 \cdot 5}$

Cancel the common factor.

$x = \frac{2 \cdot 33}{2 \cdot 5}$

Rewrite the expression.

$x = \frac{33}{5}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$x = \frac{33}{5}$

Decimal Form:

$x = 6.6$

Mixed Number Form:

$x = 6 \frac{3}{5}$