document.write( "Question 880159: which system of linear equations can be solved using the info below the question.
\n" ); document.write( "|Ax| = |20 -3| |Ay| = |2 20 |
\n" ); document.write( " |-192 8| |12 -192|\r
\n" ); document.write( "\n" ); document.write( "1. 2x - 3y =2
\n" ); document.write( " 12x + 8y = -192
\n" ); document.write( "
\n" ); document.write( "2. 20x - 3y = 2
\n" ); document.write( " -192x = 8y = 12\r
\n" ); document.write( "\n" ); document.write( "3. -3x + 2y = 20
\n" ); document.write( " 8x + 12y = 192\r
\n" ); document.write( "\n" ); document.write( "4. -3x + 8y = 20
\n" ); document.write( " 2x + 12y = -192 \n" ); document.write( "
Algebra.Com's Answer #531269 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
2x-3y=20
\n" ); document.write( "12x+8y=-192
\n" ); document.write( "I think you copied #1 incorrectly
\n" ); document.write( "20 and -192 form
\n" ); document.write( " the B matrix (the answers)\r
\n" ); document.write( "\n" ); document.write( "the x's are 2 and 12
\n" ); document.write( "the y's are -3 and 8
\n" ); document.write( "the original matrix was
\n" ); document.write( "2 -3 20
\n" ); document.write( "12 8 -192\r
\n" ); document.write( "\n" ); document.write( "The first determinant would be 2*8-(-3*12)= 16-(-36)=52
\n" ); document.write( "D=52
\n" ); document.write( "Dx=160-(-3*-192)=160-576=-416
\n" ); document.write( "Dy=-384-240=-624
\n" ); document.write( "x=Dx/D-416/52=-8
\n" ); document.write( "y=Dy/D=-624/52=-12
\n" ); document.write( " \n" ); document.write( "
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