Finite Math Examples

$3 x \cdot 1 + 2 x \cdot 2 = - 8$

Step 1

Add $8$ to both sides of the equation.

$3 x \cdot 1 + 2 x \cdot 2 + 8 = 0$

Step 2

Simplify $3 x \cdot 1 + 2 x \cdot 2 + 8$ .

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Step 2.1

Simplify each term.

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Step 2.1.1

Multiply $3$ by $1$ .

$3 x + 2 x \cdot 2 + 8 = 0$

Step 2.1.2

Multiply $2$ by $2$ .

$3 x + 4 x + 8 = 0$

Step 2.2

Add $3 x$ and $4 x$ .

$7 x + 8 = 0$

Step 3

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.