document.write( "Question 385354: Good Morning...
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document.write( "This is kind of a new concept for me so I am trying to get some help with it. I have to solve the following by method of substitution:
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document.write( "{3x-2y=13
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document.write( "{x+y=1
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document.write( "These are all together with the same bracket. I know I am supposed to solve them individually, but I am not sure how to get started. Do I just start filling in numbers? \r
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document.write( "Thanks,
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document.write( "Denise \n" );
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Algebra.Com's Answer #272659 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve the following by method of substitution: \n" ); document.write( "{3x-2y=13 \n" ); document.write( "{x+y=1 \n" ); document.write( "---- \n" ); document.write( "Solve the 2nd equation for \"x\": \n" ); document.write( "x = 1-y \n" ); document.write( "---- \n" ); document.write( "Substitute that value of \"x\" into the 1st equation \n" ); document.write( "and solve for \"y\": \n" ); document.write( "--- \n" ); document.write( "3(1-y) -2y = 13 \n" ); document.write( "3-3y-2y = 13 \n" ); document.write( "-5y = 10 \n" ); document.write( "y = -2 \n" ); document.write( "------------ \n" ); document.write( "Since x = 1-y, x = 1--2 = 3 \n" ); document.write( "------------------------------ \n" ); document.write( "Solution (3,-2) \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |