document.write( "Question 210133: solve the system of equations: y=3x-10 and x=12-4y \n" ); document.write( "

Algebra.Com's Answer #158810 by checkley77(12844) $\"\"$ $\"About$

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y=3x-10
\n" ); document.write( "x=12-4y
\n" ); document.write( "x=12-4(3x-10)
\n" ); document.write( "x=12-12x+40
\n" ); document.write( "x+12x=52
\n" ); document.write( "13x=52
\n" ); document.write( "x=52/13
\n" ); document.write( "x=4 ans.
\n" ); document.write( "y=3*4-10
\n" ); document.write( "y=12-10
\n" ); document.write( "y=2 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "4=12-4*2
\n" ); document.write( "4=12-8
\n" ); document.write( "4=4 \n" ); document.write( "

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