The word difference between indicates subtraction, and the symbol is ()
Thus, the numerical expression is “”
The numerical expression is .
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) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=49363fdb2d74e8e2027349a3b1f2fadd.png\")
”![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
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.