1 copyright © Creative Smarts Inc. GregTangMath.com October 21, 2015 GregTangMath.com

2 copyright © Creative Smarts Inc. GregTangMath.com 4 = – 8

3 copyright © Creative Smarts Inc. GregTangMath.com 12–4=8

4 copyright © Creative Smarts Inc. GregTangMath.com 12– 4=8

5 copyright © Creative Smarts Inc. GregTangMath.com 12– 4=8

6 copyright © Creative Smarts Inc. GregTangMath.com 12– 4=8 4+8= 8

7 copyright © Creative Smarts Inc. GregTangMath.com ?–4=8?–4=8

8 copyright © Creative Smarts Inc. GregTangMath.com ? ?–4=8?–4=8

9 copyright © Creative Smarts Inc. GregTangMath.com ? 4 ?–4=8?–4=8

10 copyright © Creative Smarts Inc. GregTangMath.com ? 48 ?–4=8?–4=8

11 copyright © Creative Smarts Inc. GregTangMath.com ? 48 ?–4=8?–4=8 4+8=?

12 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28

13 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28-4

14 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = x=24

15 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = x=243

16 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = x=243 x=8

17 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28

18 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28

19 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28

20 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28 x=8

21 copyright © Creative Smarts Inc. GregTangMath.com 3x+4 = 28

22 copyright © Creative Smarts Inc. GregTangMath.com X + Y = 22 Y + Z = 27 Z + X = 25

23 copyright © Creative Smarts Inc. GregTangMath.com October 21, 2015 GregTangMath.com