document.write( "Question 268762: 9x - 6y = -12
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document.write( "x + 2y= 0
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document.write( "how do you solve the system of equations by elimination \n" );
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Algebra.Com's Answer #196931 by persian52(161)![]() ![]() You can put this solution on YOUR website! 9x-6y=-12_x+2y=0\r \n" ); document.write( "\n" ); document.write( "=►Multiply each equation by the value that makes the coefficients of y equal. This value is found by dividing the least common multiple of the coefficients of y by the current coefficient. In this case, the least common multiple is 6. \n" ); document.write( "9x-6y=-12_3*(x+2y=0)\r \n" ); document.write( "\n" ); document.write( "=►Multiply each equation by the value that makes the coefficients of y equal. This value is found by dividing the least common multiple of the coefficients of y by the current coefficient. In this case, the least common multiple is 6. \n" ); document.write( "9x-6y=-12_3*(x+2y)=3(0)\r \n" ); document.write( "\n" ); document.write( "=►Multiply 3 by each term inside the parentheses. \n" ); document.write( "_3*(x+2y)=0\r \n" ); document.write( "\n" ); document.write( "=►Multiply 3 by each term inside the parentheses. \n" ); document.write( "_(3x+6y)=0\r \n" ); document.write( "\n" ); document.write( "=►Remove the parentheses around the expression 3x+6y. \n" ); document.write( "_3x+6y=0\r \n" ); document.write( "\n" ); document.write( "=►Add the two equations together to eliminate y from the system. \n" ); document.write( "3x+6y=0_9x-6y=-12_12x =-12\r \n" ); document.write( "\n" ); document.write( "=►Divide each term in the equation by 12. \n" ); document.write( "x=-1\r \n" ); document.write( "\n" ); document.write( "=►Substitute the value found for x into the original equation to solve for y. \n" ); document.write( "9(-1)-6y=-12\r \n" ); document.write( "\n" ); document.write( "=►Multiply 9 by each term inside the parentheses. \n" ); document.write( "-9-6y=-12\r \n" ); document.write( "\n" ); document.write( "=►Move all terms not containing y to the right-hand side of the equation. \n" ); document.write( "-6y=-3\r \n" ); document.write( "\n" ); document.write( "=►Divide each term in the equation by -6. \n" ); document.write( "y=(1)/(2)\r \n" ); document.write( "\n" ); document.write( "=►This is the final solution to the independent system of equations. \n" ); document.write( "x=-1_y=(1)/(2) \n" ); document.write( " |