document.write( "Question 137269This question is from textbook
\n" ); document.write( ": Could you please solve by using sustitution method. Please show details.
\n" ); document.write( "Thank you.\r
\n" ); document.write( "\n" ); document.write( "x - y = 3
\n" ); document.write( "3x - 2y = 3 \n" ); document.write( "
Algebra.Com's Answer #100437 by MORUPHOSUOLALE(24)\"\" \"About 
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x - y = 3
\n" ); document.write( "3x - 2y = 3\r
\n" ); document.write( "\n" ); document.write( "To solve this by substitution method.
\n" ); document.write( "First, change the subject of the fomulae in either equation.
\n" ); document.write( "This means... find the equation value of x or y (u can choose either)
\n" ); document.write( " I will choose x-
\n" ); document.write( "Therefore equation 1 becomes-
\n" ); document.write( "x= 3+y\r
\n" ); document.write( "\n" ); document.write( "So by substitution method ,plug in 3+y for x in equation 2.\r
\n" ); document.write( "\n" ); document.write( "Therefore-
\n" ); document.write( " 3x-2y=3 will become .... 3(3+y)-2y = 3
\n" ); document.write( " 9+3y-2y=3
\n" ); document.write( " 3y-2y= 3-9 (by collecting like terms.
\n" ); document.write( " y = -6\r
\n" ); document.write( "\n" ); document.write( " To get our x value-
\n" ); document.write( "We have to substitute the value of y which is -6 in equation 1 (preferably).
\n" ); document.write( " x-y=3
\n" ); document.write( "Plug in (-6) as y in this equation.
\n" ); document.write( " x-(-6) = 3
\n" ); document.write( " x+6 = 3
\n" ); document.write( " x= 3-6
\n" ); document.write( " x= -3
\n" ); document.write( " You can use this approach to solve any equation of this type. But when u are using substitution approach u have to be very mindful of your signs rule.Adhere to it!
\n" ); document.write( "I hope this helps and Good luck!\r
\n" ); document.write( "\n" ); document.write( "Moruph Osuolale
\n" ); document.write( "mosuolal@uncc.edu
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