5.8: 1-150dd, I 5.9: 3-210dd. 10:3-17odd, 23,29 6.1:5-19 odd 62:1-15odd, 25,27 6

Question

5.8: 1-150dd, I 5.9: 3-210dd. 10:3-17odd, 23,29 6.1:5-19 odd 62:1-15odd, 25,27 63: 1-21odd, 29-41odd 64:3-11odd, 23,25 128 Chapter 2 Understanding Variables and Solving Equations 2.3 Exercises O MyMathLab, ' CONCEPT CHECK In each list of numbers, find the one that is a solution of the given equation. See Example 1 I. A-50-8 58, 42, 60, 8 2.r-20=5 4-4x+13 5, 15, 30, 25 -4.-16, 16.-6 -4, 17,-17-9 CONCEPT CHECK To solve each equation, state the number you would add of the equation. Then explain why you picked that number. Do not 5, (a) m-8= 1 tion, state the number you would add to both sides finish the solution 6, (a) n + 2=-9 (b)-7=w+ 5 (b) 10 b-6 Solve each equation and check each solution. See Example 2 7, p+5=9 CHECK P + 5·9 CHECK a +3 p+5-9 -5-5 e+3= 12 a+0= 9 9- s-r-2 CHECK 8=r-2 10, 3-b-5 32b-5 +5 +5 CHECK 3 8rt (2) 8=r + (-2) +2 10 = r + 42 0 11.-5., n + 3 CHECK 12.-1=a+8 CHECK 13.-4+k=14 CHECK 14.-9 + y=7 CHECK

Explanation / Answer

11.) -5-3=n+3-3

=> n=-8

12.) -1-8=a+8-8

=> a=-9

13.) -4+k+4=14+4

=>k=18

14.) -9+y+9=7+9

=> y=16

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