# Precalculus Examples

Step 1

Step 1.1

Multiply each element of by to make the entry at a .

Step 1.2

Simplify .

Step 2

Step 2.1

Perform the row operation to make the entry at a .

Step 2.2

Simplify .

Step 3

Step 3.1

Multiply each element of by to make the entry at a .

Step 3.2

Simplify .

Step 4

Step 4.1

Perform the row operation to make the entry at a .

Step 4.2

Simplify .