document.write( "Question 614314: Solve the system of equations by elimination
\n" ); document.write( "7x + 6y=30
\n" ); document.write( "9x - 8y= 15 \n" ); document.write( "

Algebra.Com's Answer #386483 by mananth(16946) $\"\"$ $\"About$

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7 x + 6 y = 30 .............1
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\n" ); document.write( "9 x -8 y = 15 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 4
\n" ); document.write( "Multiply (2) by 3
\n" ); document.write( "28 x 24 y = 120
\n" ); document.write( "27 x -24 y = 45
\n" ); document.write( "Add the two equations
\n" ); document.write( "55 x = 165
\n" ); document.write( "/ 55
\n" ); document.write( "x = 3.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "7 x + 6 y = 30
\n" ); document.write( "21 + 6 y = 30
\n" ); document.write( " 6 y = 30 -21
\n" ); document.write( " 6 y = 9
\n" ); document.write( " y = 1.50 \r
\n" ); document.write( "\n" ); document.write( "(3,1.5) is the solution of the system
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