Finite Math Examples

$9 x - 8 y = 9$

Step 1

Subtract $9 x$ from both sides of the equation.

$- 8 y = 9 - 9 x$

Step 2

Divide each term in $- 8 y = 9 - 9 x$ by $- 8$ and simplify.

Tap for more steps...

Step 2.1

Divide each term in $- 8 y = 9 - 9 x$ by $- 8$ .

$\frac{- 8 y}{- 8} = \frac{9}{- 8} + \frac{- 9 x}{- 8}$

Step 2.2

Simplify the left side.

Tap for more steps...

Step 2.2.1

Cancel the common factor of $- 8$ .

Tap for more steps...

Step 2.2.1.1

Cancel the common factor.

$\frac{- 8 y}{- 8} = \frac{9}{- 8} + \frac{- 9 x}{- 8}$

Step 2.2.1.2

Divide $y$ by $1$ .

$y = \frac{9}{- 8} + \frac{- 9 x}{- 8}$

Step 2.3

Simplify the right side.

Tap for more steps...

Step 2.3.1

Simplify each term.

Tap for more steps...

Step 2.3.1.1

Move the negative in front of the fraction.

$y = - \frac{9}{8} + \frac{- 9 x}{- 8}$

Step 2.3.1.2

Dividing two negative values results in a positive value.

$y = - \frac{9}{8} + \frac{9 x}{8}$

Step 3

When solving for $y$ , $y = - \frac{9}{8} + \frac{9 x}{8}$ , so $y$ doesn't vary directly with $x$ .

$y$ doesn't vary directly with $x$