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# Solving one step equations

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### Solving one step equations

1. 1. Solving One-Step Equations Created by S. Koch - 2003
2. 2. DefinitionsTerm: a number, variable or the product or quotient of a number and a variable. 12 X 2w c 3 Created by S. Koch - 2003
3. 3. Terms are separated by addition (+) or subtraction (-) signs. 3a – 2/5b + 7x – 4z + 52How many Terms do you see? 5 Created by S. Koch - 2003
4. 4. DefinitionsConstant: a term that is a number only.Coefficient: the number value in front of a variable in a term. Created by S. Koch - 2003
5. 5. 3x – 6y + 18 = 0What are your coefficients? 3 , -6What is your constant? 18 Created by S. Koch - 2003
6. 6. Solving one-step equations:A one-step equation means you only have to perform 1 mathematical operation to solve it.You can add, subtract, multiply or divide to solve a one-step equation. Created by S. Koch - 2003
7. 7. Example 1Solving an addition equation: t + 7 = 21Get rid of the 7 by adding its opposite to both sides of the equation. t + 7 = 21 -7 -7 t = 14 Created by S. Koch - 2003
8. 8. Example 2Solving a subtraction equation: g – 6 = 40Get rid of the 6 by adding its opposite to both sides of the equation. g – 6 = 40 +6 +6 g = 46 Created by S. Koch - 2003
9. 9. Example 3Solving a multiplication equation: 8n = 32Get rid of the 8 by dividing both sides of the equation by 8. Here we “undo” multiplication by doing the opposite – division. 8n = 32 8 8 n=4 Created by S. Koch - 2003
10. 10. Example 4Solving a division equation: k / 9 = 11Get rid of the 9 by multiplying both sides of the equation by 9. Here we “undo” division by doing the opposite – multiplication. k / 9 = 11 x9 x9 k = 99 Created by S. Koch - 2003
11. 11. Homework Use your notes and show ALL steps. Created by S. Koch - 2003