document.write( "Question 1016110: 4x-3y=19
\n" ); document.write( "6x+3y=21
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Algebra.Com's Answer #632513 by skippo(9) $\"\"$ $\"About$

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4x-3y=19...........I
\n" ); document.write( "6x+3y=21...........II
\n" ); document.write( "solution:
\n" ); document.write( "add equation I and II to eliminate y
\n" ); document.write( "4x-3y+6x+3y=19+21
\n" ); document.write( "10x=40
\n" ); document.write( "divide both sides by 10
\n" ); document.write( "10x/10 = 40/10
\n" ); document.write( "x=4
\n" ); document.write( "substitute 4 for x in equation I
\n" ); document.write( "4(4)-3y=19
\n" ); document.write( "16-3y=19
\n" ); document.write( "-3y=19-16
\n" ); document.write( "-3y=3
\n" ); document.write( "divide both sides by -3
\n" ); document.write( "-3y/-3 = 3/-3
\n" ); document.write( "y = -1
\n" ); document.write( "x=4, y=-1 \n" ); document.write( "

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