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Published byLee Shepherd Modified over 8 years ago

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EXAMPLE 1 Find multiplicative inverses of numbers a. The multiplicative inverse of 1 5 – is – 5 because b. The multiplicative inverse of 6 7 – is 7 6 – because 1 5 – (– 5) = 1.= 1. 6 7 – 7 6 – = 1.= 1.

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Find the quotient. EXAMPLE 2 Divide real numbers = –4 = 12 a. –16 4 = 1 4 –16 –20 b.b. 5 3 – = – 3 5

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GUIDED PRACTICE for Examples 1 and 2 Find the multiplicative inverse of the number. 1. – 27 1 27 – 2. – 8 1 8 – 3. – 4 7 7 4 – 4. – 1 3 – 3

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GUIDED PRACTICE for Examples 1 and 2 = 16 1 4 = –1= –16. – 3 8 3 10 5. – 64 (– 4) Find the quotient. 7. 18 – 2 9 = – 81 2 5 8. – 18 1 45 = –= –

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Simplify an expression EXAMPLE 4 Simplify the expression 36x 24 6 –. 6 – Rewrite fraction as division. Division rule Distributive property 6x – 4 = Simplify. = 36x 24–6 ( ) = – 1 6 ) ( = 36x 1 6 – 1 6 24

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GUIDED PRACTICE for Examples 3 and 4 Simplify the expression 2x – 8 –4 11. – x = 1 2 + 2 –6y +18 3 12. = –2y + 6 –10z – 20 –5 13. = 2z + 4

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