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Download Lesson 12-2 Check Your Understanding ACTIVITY 12
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Lesson 12-2 Solutions of Equations ACTIVITY 12 continued My Notes Check Your Understanding Use this set of possible solutions to determine a solution to each equation using substitution. {3, 8, 10, 14, 15, 16} 3. 4 = 0.5z − 4 4. 11 = x − 3 5. 63 = 21 x 6. 21 + a = 29 y 7. + 1 = 6 3 8. 8x − 2 = 78 LESSON 12-2 PRACTICE Use this set of possible solutions to determine a solution to each equation using substitution. {1, 2, 5, 6, 12, 20} 9. 13x = 26 10. 6x + 9 = 45 14. x2 + 3 = 4 15. Attend to precision. In Lesson 12-1, Item 8, you wrote an equation for this situation: Brynn needs to save $125 to build a doghouse for her new puppy. She has saved $68. How much more does she need to save? Now use this set of possible solutions and substitution to solve the equation. {$193, $67, $57, $125} 154 Unit 3 • Expressions and Equations © 2014 College Board. All rights reserved. 11. 3a − 12 = 48 y 12. −2 =1 4 13. 4 = z − 1