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Distributive Property Absent copy. 9/19,20. Example 1. Simplify. 4(x + 5) 4 (x) + 4 (5) 4x + 20 Solution. 1. We can’t add x and 5 why? We can not add them because there is a variable and a constant.

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## Distributive Property Absent copy

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**Distributive PropertyAbsent copy**9/19,20**Example 1**Simplify. 4(x + 5) 4(x) + 4(5) 4x + 20 Solution • 1. We can’t add x and 5 why? • We can not add them because there is a variable and a constant. • 2. What do we do with the 4 on the outside of the parenthesis? • We have to distribute the 4 to both the x and the 5. We multiply the 4 to both of them. 4x + 20**Example 2**Simplify: 6(2y + 3) 6(2y) + 6(3) 12y + 18 Solution 1. We can’t add 2y and 3 why? • We can not add them because there is a coefficient with the variable and a constant. 2. What do we do with the 6 on the outside of the parenthesis? We have to distribute the 6 to both the 2y and the 3. We multiply the 6 to both of them. 12y + 18**Example 3**Simplify: 4(2r + 5) - 3r 4(2r) + 4(5) – 3r 8r + 20 – 3r 1. 8r – 3r = 5r 2. 20 Solution • Can we add what is in the parenthesis? Yes or no? 2. What do we do with the 4 that is outside the parenthesis? • We have to distribute the 4 to both the 2r and the 5. We multiply the 4 to both of them. 3. What is the last step before we get a solution? • To add or subtract the like terms that are the same. 5r + 20**Example 4**Simplify: 4(4x + 4) + 3(x + 5) 4(4x) + 4(4) + 3(x) + 3(5) 16x + 16 + 3x + 15 1. 16x + 3x = 19x 2. 16 + 15 = 31 Solution 1. How many groupings do we have? • We have 2 different groupings. 2. What do we do with the 4 & 3 that are outside the parenthesis ? • We have to distribute the 4 through the first parenthesis and the 3 through the second parenthesis. 3. What is the last step before we a get solution? • To add or subtract the like terms that are the same. 19x + 31

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