document.write( "Question 391852: I need help solving these equations using the elimination method.\r
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document.write( "x + 8y = 28
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document.write( "-x + 5y = 11\r
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document.write( "5x + 2y = -13
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document.write( "7x - 3y = 11\r
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document.write( "0.3x - 0.2y = 4
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document.write( "0.2x + 0.3y = 29/19\r
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document.write( "8x - 9y = 32.5
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document.write( "7y - 2x = -10.5\r
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document.write( "0.05x + 0.25y = 11
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document.write( "0.15x + 0.05y = 12
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Algebra.Com's Answer #278014 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! The first pair of equations is quite simple, just add them to get\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "13y = 39, y = 3 --> x = 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Do the others the same way. You might have to multiply one or both equations by a constant to cancel a variable out. For example, the next set of equations, you could multiply the first equation by 3 and the second equation by 2, then adding them to cancel y. \n" ); document.write( " |