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Section 3.1

Section 3.1. Solving One-Step Equations. Vocabulary : Inverse Operations:________________________________________________. Equivalent Equations :______________________________________________. To solve an equation, you must _______________________________________.

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Section 3.1

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  1. Section 3.1 Solving One-Step Equations

  2. Vocabulary: Inverse Operations:________________________________________________. Equivalent Equations:______________________________________________. To solve an equation, you must _______________________________________. two operations that undo each other equations that have the same solutions isolate the variable on one side of the = sign

  3. Solving and equation using addition or subtraction • 1. 2. 3. Always circle your final answer

  4. How can you check your answers _______________________________________? Does for the equation ? Why Substitute the value back in for the variable Yes, -2 is a solution for the equation

  5. Match the real life problems with equation. 9-x=7

  6. Geometry application: An equilateral triangle has a perimeter of 42 inches. Write and solve an equation to find the length of the side of the triangle. P=42 Each side of the triangle is 14 inches

  7. The inverse operation of multiplication is ______________ The inverse operation of division is _________________ division multiplication

  8. Write and solve an equation to answer the question. • Each household in the United States receives about 676 pieces of junk mail per year. About how many pieces does a household receive per week? • You ate three of the eight pizza slices and you paid $3.30 as your share of the cost. How much did the whole pizza cost? Hint: 52 weeks per year Each household receives about 13 pieces of junk mail per week The whole pizza cost $8.80

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