Finite Math Examples

$f (x) = 3 x + 6$

Step 1

Set $3 x + 6$ equal to $0$ .

$3 x + 6 = 0$

Step 2

Solve for $x$ .

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Step 2.1

Subtract $6$ from both sides of the equation.

$3 x = - 6$

Step 2.2

Divide each term in $3 x = - 6$ by $3$ and simplify.

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Step 2.2.1

Divide each term in $3 x = - 6$ by $3$ .

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

Step 2.2.2

Simplify the left side.

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Step 2.2.2.1

Cancel the common factor of $3$ .

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Step 2.2.2.1.1

Cancel the common factor.

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

Step 2.2.2.1.2

Divide $x$ by $1$ .

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

Step 2.2.3

Simplify the right side.

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Step 2.2.3.1

Divide $- 6$ by $3$ .

$x = - 2$

Step 3