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+/- Equations Lessons 2-5 and 2-6

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Warm-up 1)2 + ( 16 ÷ 2 2 ) x 5 – 14 = 2)(3 2 – 4) x 5 + 6 ÷ 2 = 3)12 – 6 + 14 – 7 = 4)36 ÷ 3 2 x 2 2 ÷ 4 = 8 28 13 4

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Add to your glossary Inverse Operation: Pairs of operations that undo each other. Unit 4 Addition and subtraction are inverse operations. Multiplication and division are inverse operations.

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Put into your notes Addition and Subtraction are opposite operations. They undo each other; example ofinverse operations. When you have an equation, such as; x + 15 = 21, you will subtract 15 from both sides. x + 15 = 21 - 15 x = 6

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When you are doing your homework You must write the problem You must show the work What I want to see is: 47 = w - 42 + 42 89 = w

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Examples for your notes p – 8 = 14 28 + s = 34 16 = x – 2

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Kelli is saving money to buy a sweater that costs $34. She already has $12 saved. Write an equation to show how much more she needs to save. Use s as your variable. Solve. Example for your notes

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Solving Equations continued Two Step Equations. Examine 2X + 3 = 15 What operations do you see?

Solving Equations continued Two Step Equations. Examine 2X + 3 = 15 What operations do you see?

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