document.write( "Question 652268: /2z-3/=4z-1 \n" ); document.write( "
Algebra.Com's Answer #407939 by Shana-D77(132)![]() ![]() You can put this solution on YOUR website! the absolute value of anything can be equal to either a number or the opposite of a number. Ex: |-5| = 5 (opposite of what's inside) |5| = 5 (exactly what's inside)\r \n" ); document.write( "\n" ); document.write( "So, |2z - 3| = 4z - 1 or |2z - 3| = -(4z - 1)\r \n" ); document.write( "\n" ); document.write( "2z - 3 = 4z - 1 or 2z - 3 = -4z + 1\r \n" ); document.write( "\n" ); document.write( "Solve both equations for z, you get...\r \n" ); document.write( "\n" ); document.write( "z = -1 and z = 2/3\r \n" ); document.write( "\n" ); document.write( "Wait! We have to throw out -1 because |2(-1) - 3| = |-5| = 5 and the other side would be 4(-1) - 1 = -5. 5 does not equal -5!\r \n" ); document.write( "\n" ); document.write( "So the only answer that works is z = 2/3 (make sure you check both as sometimes neither may work) \n" ); document.write( " |