Precalculus Examples

$\sum_{i = 1}^{3} 3 n - 2$

Step 1

Expand the series for each value of $i$ .

$3 n - 2 + 3 n - 2 + 3 n - 2$

Step 2

Substitute the values back and simplify $3 n - 2 + 3 n - 2 + 3 n - 2$ .

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Step 2.1

Add $3 n$ and $3 n$ .

$6 n - 2 - 2 + 3 n - 2$

Step 2.2

Add $6 n$ and $3 n$ .

$9 n - 2 - 2 - 2$

Step 2.3

Simplify by subtracting numbers.

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Step 2.3.1

Subtract $2$ from $- 2$ .

$9 n - 4 - 2$

Step 2.3.2

Subtract $2$ from $- 4$ .

$9 n - 6$