document.write( "Question 1208247: |x+4|+2|x+4|+4|x+4|+5=19\r
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document.write( "Hi tutor
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document.write( "I am struggling in my algebra class, particularly with absolute value. Would you please take me step by step through the process of how I would solve it? \n" );
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Algebra.Com's Answer #846543 by ikleyn(52794)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "|x+4| + 2|x+4| + 4|x+4| + 5 = 19. \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "It is easy.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "On the left side, you have three addends with identical part |x+4|.\r\n" ); document.write( "\r\n" ); document.write( "So, you combine like terms in the left side. Then your equation takes the form\r\n" ); document.write( "\r\n" ); document.write( " 7*|x+4| + 5 = 19.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Now move constant term 5 from left side to the right (by subtracting 5 from both sides).\r\n" ); document.write( "\r\n" ); document.write( "You get then\r\n" ); document.write( "\r\n" ); document.write( " 7*|x+4| = 19 - 5,\r\n" ); document.write( "\r\n" ); document.write( "or\r\n" ); document.write( "\r\n" ); document.write( " 7*|x+4| = 14.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Next, you divide both sides by 7. It gives you\r\n" ); document.write( "\r\n" ); document.write( " |x+4| = 14/7 = 2.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Thus, the absolute value of (x+4) is 2. It means that x+4 is EITHER 2 OR -2.\r\n" ); document.write( "\r\n" ); document.write( "Therefore, we consider two cases.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " Case 1. x+4 = 2. Subtract 4 from both sides. You will get\r\n" ); document.write( "\r\n" ); document.write( " x = 2 - 4 = -2. So, x = -2 is the solution.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " Case 2. x+4 = -2. Again, subtract 4 from both sides. You will get\r\n" ); document.write( "\r\n" ); document.write( " x = -2 - 4 = -6. So, x = -6 is another solution.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Thus, the given equation has two solutions: x= -2 and x= -6.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "CHECK. First, check that that x= -2 is the solution.\r\n" ); document.write( "\r\n" ); document.write( " You have |-2+4| = |2| = 2. ! correct !\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " Next, check that x= -6 is the solution. \r\n" ); document.write( "\r\n" ); document.write( " You have |-6+4| = |-2| = 2. ! correct !\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "At this point, the solution is complete.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Come again to this forum soon to learn something new !\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-----------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To see many other similar introductory level absolute value equations \n" ); document.write( "with detailed solutions and explanations, look into the lesson\r \n" ); document.write( "\n" ); document.write( " - Absolute Value equations\r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Learn the subject from there. This lesson is to start.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "When you become more familiar with the subject, you may start learning \n" ); document.write( "more complicated absolute value equations from other lessons in that section.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Do not hesitate to ask questions, if you need it.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To learn this subject, it is necessary to solve sufficient amount of relevant problems \n" ); document.write( "on your own. It is also good to read/(to look at) solutions from other sources.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The lessons in this section do provide you this possibility /opportunity.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |