document.write( "Question 345508: 6x + 5y = 51
\n" ); document.write( "7x + 3y = 51 \n" ); document.write( "
Algebra.Com's Answer #247094 by mananth(16946)\"\" \"About 
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6x + 5y = 51
\n" ); document.write( "7x + 3y = 51
\n" ); document.write( "multiply equation 1 by -7 and equation 2 by 6
\n" ); document.write( "we get
\n" ); document.write( "-42x-35y=-357
\n" ); document.write( "42x+18y=306
\n" ); document.write( "add the two equations
\n" ); document.write( "-35y+18y-42x+42x=-351+306
\n" ); document.write( "-17y=-51
\n" ); document.write( "/-17
\n" ); document.write( "y= -51/-17
\n" ); document.write( "y= 51/17
\n" ); document.write( "y=3
\n" ); document.write( "...
\n" ); document.write( "plug the value of y in any equation
\n" ); document.write( "6x+5*3=51
\n" ); document.write( "6x+15=51
\n" ); document.write( "6x=51-15
\n" ); document.write( "6x = 36
\n" ); document.write( "x= 6 \n" ); document.write( "
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