document.write( "Question 421854: the sum of 3 nos is 24 among them 1number is equal to half of the sum of other 2 nos but four times the difference of them find the numbers \n" ); document.write( "
Algebra.Com's Answer #294512 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let the numbers be x y z \n" ); document.write( "x+y+z=24 \n" ); document.write( "x=1/2(y+z) \n" ); document.write( "2x=y+z \n" ); document.write( "2x-y-z=0 \n" ); document.write( "x=4(y-z) \n" ); document.write( "x=4y-4z \n" ); document.write( "x-4y+4z=0 \n" ); document.write( ".... \n" ); document.write( "x+y+z=24 --------------1 \n" ); document.write( "2x-y-z= 0-------------2 \n" ); document.write( "x-4y+4z= 0-------------3 \n" ); document.write( ".. \n" ); document.write( "consider equation 1 &2 \n" ); document.write( "Multiply 1 by 1 \n" ); document.write( "Multiply 2 by 1 \n" ); document.write( "we get \n" ); document.write( "x+y+z=24 \n" ); document.write( "2x-y-z=0 \n" ); document.write( "Add the two \n" ); document.write( "3x=24 -------------4 \n" ); document.write( "consider equation 2 & 3 \n" ); document.write( "Multiply 2 by -4 \n" ); document.write( "Multiply 3 by 1 \n" ); document.write( "we get \n" ); document.write( "-8x+4y +4z=0 \n" ); document.write( "x-4y+4z =0 \n" ); document.write( "Add the two \n" ); document.write( "-7x+8z=0 -------------5 \n" ); document.write( "Consider (4) & (5) \n" ); document.write( "Multiply 4 by 7 \n" ); document.write( "Multiply (5) by 3 \n" ); document.write( "we get \n" ); document.write( "21x=168 \n" ); document.write( "-21x+24z =0 \n" ); document.write( "Add the two \n" ); document.write( "24z=168 \n" ); document.write( "/24 \n" ); document.write( "z=7 \n" ); document.write( "Plug the value of z in 5 \n" ); document.write( "-7x+56=0 \n" ); document.write( "-7x=-56 \n" ); document.write( "x=8 \n" ); document.write( "plug value of x & z in 1 \n" ); document.write( "8+y+7=24 \n" ); document.write( "y=-8-7+24 \n" ); document.write( "y=9 \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |