document.write( "Question 490885: please help help me with this question....Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this.... -8x -4y=-68
\n" ); document.write( "x+3y=16 please help me with this asap i am not sure how to do this and cannot find a similar one to go by i need to get it back to my instructor today \n" ); document.write( "
Algebra.Com's Answer #334357 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
-8x - 4y = -68
\n" ); document.write( "divide both sides by -4, then you have
\n" ); document.write( "2x + y = 17
\n" ); document.write( ":
\n" ); document.write( "x + 3y = 16
\n" ); document.write( "Arrange this equation for substitution
\n" ); document.write( "x = -3y + 16
\n" ); document.write( ":
\n" ); document.write( "Replace x in the 1st simplified equation with (-3y+16)
\n" ); document.write( "2(-3y+16) + y = 17
\n" ); document.write( "-6y + 32 + y = 17
\n" ); document.write( "-6y + y = 17 - 32
\n" ); document.write( "-5y = -15
\n" ); document.write( "multiply both sides by -1
\n" ); document.write( "5y = 15
\n" ); document.write( "y = 15/5
\n" ); document.write( "y = 3
\n" ); document.write( ":
\n" ); document.write( "find x
\n" ); document.write( "x = -3y + 16
\n" ); document.write( "replace y with 3
\n" ); document.write( "x = -3(3) + 16
\n" ); document.write( "x = -9 + 16
\n" ); document.write( "x = 7
\n" ); document.write( ":
\n" ); document.write( "summarize x=7, y=3
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check in the 1st original equation
\n" ); document.write( "-8x - 4y = -68
\n" ); document.write( "-8(7) - 4(3) = -68
\n" ); document.write( "-56 - 12 = -68, confirms our solutions \n" ); document.write( "
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