The equation is .
Apply subtraction property of equality: Subtract 2h from each side.
Apply commutative property of addition: a + b = b + a.
(Apply additive inverse property: )
(Subtract: )
The value of .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=66cd761a30d4b9b26a6046c51e8f898f.png\")
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=aa3cd7059e88a7b8a96bc73e328d5647.png\")
(Apply additive inverse property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8f8e2d3a3e4ff1994e647caef58521ba.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0d61fdf6d0fa8fab0fe7293404f27d0e.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=11ff823941457728fbd1108f60155f8e.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
.