document.write( "Question 1012562: 2x+2y=4
\n" ); document.write( "4x+2y=-8
\n" ); document.write( "How will be this equation will solved by matrix
\n" ); document.write( "inverdion method \n" ); document.write( "
Algebra.Com's Answer #628544 by addingup(3677)\"\" \"About 
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2x+2y=4 Let's subtract this from the next.
\n" ); document.write( "4x+2y=8
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\n" ); document.write( "4x+2y = 8
\n" ); document.write( "-+2x+2y = 4
\n" ); document.write( "2x----= 4
\n" ); document.write( "x = 2
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\n" ); document.write( "Now find y:
\n" ); document.write( "2x+2y= 4
\n" ); document.write( "2(2)+2y= 4
\n" ); document.write( "4+2y= 4
\n" ); document.write( "2y= 0
\n" ); document.write( "y= 0
\n" ); document.write( "------------------------------------------
\n" ); document.write( "Check:
\n" ); document.write( "2x+2y= 4
\n" ); document.write( "2(2)+2(0)= 4
\n" ); document.write( "4+0= 4 this is correct. Let's try the next one:
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\n" ); document.write( "4x+2y = 8
\n" ); document.write( "4(2)+2(0) = 8
\n" ); document.write( "8+0 = 8 this is also correct. We have the right answer:
\n" ); document.write( "x = 2
\n" ); document.write( "y = 0\r
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