Algebra Examples

$a_{n} = 7 + (n - 1) \cdot 5$

Step 1

Substitute in the value of $n$ to find the $n$ th term.

$a_{3} = 7 + ((3) - 1) \cdot 5$

Step 2

Simplify each term.

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Step 2.1

Subtract $1$ from $3$ .

$a_{3} = 7 + 2 \cdot 5$

Step 2.2

Multiply $2$ by $5$ .

$a_{3} = 7 + 10$

Step 3

Add $7$ and $10$ .

$a_{3} = 17$