document.write( "Question 992935: solve the system using substitution:
\n" ); document.write( "4x-3y=-6
\n" ); document.write( "-x-2y=7\r
\n" ); document.write( "\n" ); document.write( "i got some weird answer on my quiz and i got it wrong i just want to see what i did wrong
\n" ); document.write( "

Algebra.Com's Answer #612399 by MathTherapy(10552)\"\" \"About 
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solve the system using substitution:
\n" ); document.write( "4x-3y=-6
\n" ); document.write( "-x-2y=7\r
\n" ); document.write( "\n" ); document.write( "i got some weird answer on my quiz and i got it wrong i just want to see what i did wrong
\n" ); document.write( "
 4x - 3y = - 6 ------- eq (i)
\n" ); document.write( "- x - 2y = 7 ------- eq (ii)
\n" ); document.write( "The easiest way to apply substitution is to solve the 2nd equation for x, since the coefficient of x is - 1
\n" ); document.write( "Solving the 2nd equation for x results in: x = - 2y- 7
\n" ); document.write( "4(- 2y - 7) - 3y = - 6 ------ Substituting - 2y - 7 for x in eq (i)
\n" ); document.write( "- 8y - 28 - 3y = - 6
\n" ); document.write( "- 11y = 22
\n" ); document.write( "y = \"22%2F%28-+11%29\", or \"highlight_green%28-+2%29\"
\n" ); document.write( "Substitute - 2 for y in eq (ii) to get the value of x as:\"highlight_green%28-+3%29\" \n" ); document.write( "
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