The expression is .
(Apply commutative property of addition: )
(Apply associative property of addition: )
(Add: 17 + 31 = 48)
The simplified expression is m + 48.
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(Apply commutative property of addition: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=04ab48db2a6385513b3391bf07d33cff.png\")
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(Add: 17 + 31 = 48) ![\"\"](\"/userfiles/image/steps_images/solution.JPG\")