document.write( "Question 63334: can you please solve me this equations? thank you
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document.write( "1. Solve the system of equations using the addition (elimination) method.
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document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
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document.write( "x + 2y = 5
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document.write( "3x + 4y = 1\r
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document.write( "2. Solve the system of equations using the addition (elimination) method.
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document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
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document.write( "5x – 4y = 1
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document.write( "-10x + 8y = -3
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Algebra.Com's Answer #44158 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! 1. Solve the system of equations using the addition (elimination) method. \n" ); document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.” \n" ); document.write( "x + 2y = 5 \n" ); document.write( "3x + 4y = 1 \n" ); document.write( ": \n" ); document.write( "Mult the 1st equation by -2 and add to the 2nd equation, eliminating y \n" ); document.write( "-2x - 4y = -10 \n" ); document.write( "3x + 4y = 1 \n" ); document.write( "----------------add \n" ); document.write( "+x + 0 = -9 \n" ); document.write( "x = -9 \n" ); document.write( ": \n" ); document.write( "Find y; substitute -9 for x in the 1st equation: \n" ); document.write( "-9 + 2y = 5 \n" ); document.write( "2y = 5 + 9 \n" ); document.write( "2y = 14 \n" ); document.write( "y = 14/2 \n" ); document.write( "y = +7 \n" ); document.write( ": \n" ); document.write( "Check solutions in 2nd equation: \n" ); document.write( "3(-9) + 4(7) = 1 \n" ); document.write( "-27 + 28 = +1 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "2. Solve the system of equations using the addition (elimination) method. \n" ); document.write( "If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.” \n" ); document.write( "5x – 4y = 1 \n" ); document.write( "-10x + 8y = -3 \n" ); document.write( ": \n" ); document.write( "Mult the 1st equation by 2 and add to the 2nd equation: \n" ); document.write( "+10x - 8y = 2 \n" ); document.write( "-10x + 8y = -3 \n" ); document.write( "----------------- \n" ); document.write( " 0x + 0y = -1 means no solution, the lines are parallel, same slope \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |