document.write( "Question 1165325: Solve each system of equation by elimination. Show your work.
\n" ); document.write( "a. (6,a) b. (-4,b) c. (C,25) d. (d,-5)\r
\n" ); document.write( "\n" ); document.write( "a {6x+5y=-20, -6x+10y=25} b. {5x-4y=23, 7x+8y=5}
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Algebra.Com's Answer #789817 by Seutip(231)\"\" \"About 
You can put this solution on YOUR website!
Solve each system of equation by elimination.
\n" ); document.write( "Show your work. (uhm sorry but i don't know what you mean
\n" ); document.write( "in here but i can help you with the other given)
\n" ); document.write( "a. (6,a)
\n" ); document.write( "b. (-4,b)
\n" ); document.write( "c. (C,25)
\n" ); document.write( "d. (d,-5)\r
\n" ); document.write( "\n" ); document.write( "a {6x+5y=-20, -6x+10y=25}
\n" ); document.write( "Since -6x+10y=25 you can do this
\n" ); document.write( "\"%286x%2B5y%29%2B%28-6x%2B10y%29=%28-20%29%2B%2825%29\"
\n" ); document.write( "\"15y=5\"
\n" ); document.write( "\"y=1%2F3\"
\n" ); document.write( "\"x=-65%2F18\"\r
\n" ); document.write( "\n" ); document.write( "b. {5x-4y=23, 7x+8y=5}
\n" ); document.write( "Multiply first equation by 2
\n" ); document.write( "10x-8y=46 then add to
\n" ); document.write( "7x+8y=5
\n" ); document.write( "17x=51
\n" ); document.write( "X=3
\n" ); document.write( "y=-2\r
\n" ); document.write( "\n" ); document.write( "Hope that helps!
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