document.write( "Question 33961: directions:solve problems using two unkowns and a system of two equations.\r
\n" ); document.write( "\n" ); document.write( "the diffrence of two numbers is -1. if twice the first number is added to three times the second number, the result is 13. what are the numbers
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Algebra.Com's Answer #20352 by fanism(39)\"\" \"About 
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let the first # be x and the second # be y
\n" ); document.write( "x - y = -1 -- eq 1
\n" ); document.write( "2x + 3y = 13 -- eq 2\r
\n" ); document.write( "\n" ); document.write( "multifply eq 1 by 2, yields
\n" ); document.write( "2x - 2y = -2 -- eq 3\r
\n" ); document.write( "\n" ); document.write( "now, take eq2 - eq3, u will get
\n" ); document.write( "0 - 5y = 15
\n" ); document.write( "y = -3\r
\n" ); document.write( "\n" ); document.write( "sub y = -3 into any of the above equation,
\n" ); document.write( "let use eq1, u will get
\n" ); document.write( "x - (-3) = -1
\n" ); document.write( "x + 3 = -1
\n" ); document.write( "x = -4
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