![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The expression is ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ade095f16afec89f06bfe999946beabb.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2153e8ee84f4533ac96539f289e9113c.png\")
(Commutative Property of Addition: a + b = b + a)
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d4d8e0ea10ac6609b1b367df975601eb.png\")
(Associative Property of Addition)
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f0c00318d0da180f9844c5200df36b0d.png\")
(Distributive property: ab + ac = a(b + c) )
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e3769c9abdaff8707a80fa1ba9a882e4.png\")
(Substitution property: 8 + 1 = 9)
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The simplified expression is ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7ff16264cb4a4c6da0dedf2c7fdffe2b.png\")
.