O) USE THE I'llEs to complete each example. Operation Rules Example 1 . Treat i as a variable . 13 - Bij + | 10 + 21} Addition 2 . Then combine like* 13 + 10) + 1 - Bi + 2} terms 13 - Gil 1 . Treat i as a | + 411 - 1 - 7 + Gil variable . Subtraction 2 . Distribute the minus sign . 3 . Then combine like* terms. 1 . Treat the complex 15 - 3}19 + 6} numbers like binomials . Multiplication 2 . Use FOIL to multiply . 3 . Substitute - 1 for 2 ! 4. Simplify