document.write( "Question 251413: how do i solve these two equations by using cramers rule?
\n" ); document.write( "20t+50f=1800 and 2f=t \n" ); document.write( "

Algebra.Com's Answer #183087 by stanbon(75887) $\"\"$ $\"About$

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solve these two equations by using cramers rule?
\n" ); document.write( "20t+50f=1800
\n" ); document.write( "and 2f=t
\n" ); document.write( "-----------------
\n" ); document.write( "Rearrange
\n" ); document.write( "2t + 5f = 180
\n" ); document.write( " t - 2f = 0
\n" ); document.write( "---------------
\n" ); document.write( "Coefficient determinant:
\n" ); document.write( "2...5
\n" ); document.write( "1..-2
\n" ); document.write( "-------------
\n" ); document.write( "D = (2*-2)-(5*1) = -9
\n" ); document.write( "==========================
\n" ); document.write( "x-determinant:
\n" ); document.write( "180...5
\n" ); document.write( "0.....0
\n" ); document.write( "Dx = (180*0)-(5*0) = 0
\n" ); document.write( "==========================
\n" ); document.write( "y-determinant
\n" ); document.write( "2....180
\n" ); document.write( "1.....0
\n" ); document.write( "Dy = (2*0)-(180*1) = -180
\n" ); document.write( "==========================
\n" ); document.write( "x = Dx/D = 0/-9 = 0
\n" ); document.write( "y = Dy/D = -180/-9 = 20
\n" ); document.write( "===========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "

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