document.write( "Question 837816: 2.)Solve the system using substitution, explain your steps
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document.write( "3x – 4y = 10
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document.write( "2y = 2x – 6
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Algebra.Com's Answer #504756 by josgarithmetic(39618)![]() ![]() ![]() You can put this solution on YOUR website! Solve one of the equations for either variable; substitute the expression for this variable into the other equation. Solve for the variable in this equation. Use the result or the value to solve for the other variable.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Example, find x from your first equation: \n" ); document.write( "3x-4y=10 \n" ); document.write( "3x=10+4y \n" ); document.write( "x=10/3+4y/3 \n" ); document.write( "- \n" ); document.write( "Substitute into second equation: \n" ); document.write( "2y=2(10/3+4y/3)-6 \n" ); document.write( "y=(10/3+4y/3)-3 \n" ); document.write( "3y=10+4y-1, after dividing by three \n" ); document.write( "0=10-1+y \n" ); document.write( "-9=y \n" ); document.write( "- \n" ); document.write( "Use the value of y to find value of x: \n" ); document.write( "x=10/3+4(-9)/3 \n" ); document.write( "x=(10-36)/3 \n" ); document.write( "x=-26/3 \n" ); document.write( "- \n" ); document.write( "- \n" ); document.write( "ANSWER: x=-26/3 and y=-9 \n" ); document.write( " |