![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The equation is 4 = 7 + p.
\Apply addition property of equality: Subtract 5 from each side.
\4 ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=90a2dffa4cf28836c23bfcd658a94d29.png\")
7 = 7 + p ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=90a2dffa4cf28836c23bfcd658a94d29.png\")
7
4 7 = p (Apply additive inverse property: 7 7 = 0)
p = 3 (Subtract: 4 7 = 3)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Check:
\To check the solution, substitute p = 3 in original equation.
4 = 7 + p![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cf88eb4b75e2e087ff1d68b5148e102c.png\")
4 = 7 3
4 = 4 (Subtract: 7 3 = 4)
The statement is true.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The value of p = 3.