document.write( "Question 1007449: Please help me solve this simultaneous Equation : 2x-y = 5
\n" ); document.write( " 3x- 3y-3/5 =4 \n" ); document.write( "

Algebra.Com's Answer #623368 by rothauserc(4718) $\"\"$ $\"About$

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1) 2x - y = 5
\n" ); document.write( "2) 3x - 3y - (3/5) = 4
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\n" ); document.write( "simplify the second equation
\n" ); document.write( "3) 3x - 3y = 23/5
\n" ); document.write( "multiply first equation by 3
\n" ); document.write( "4) 6x - 3y = 75/5
\n" ); document.write( "subtract equation 3) from equation 4)
\n" ); document.write( "3x = 52/5
\n" ); document.write( "x = 52/15
\n" ); document.write( "substitute for x in equation 1)
\n" ); document.write( "2*(52/15) - y = 5
\n" ); document.write( "104/15 -y = 75/15
\n" ); document.write( "y = 29/15
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\n" ); document.write( "x = 52/15 and y = 29/15
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\n" ); document.write( "check the answer by substituting for x and y in equation 2)
\n" ); document.write( "3(52/15) -3(29/15) = 69/15
\n" ); document.write( "156/15 - 87/15 = 69/15
\n" ); document.write( "69/15 = 69/15
\n" ); document.write( "our answer checks
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