document.write( "Question 687769: Solve by THE Elimination method 5u+ 2v=-18 3u+v=-7 \n" ); document.write( "
Algebra.Com's Answer #425336 by ReadingBoosters(3246)\"\" \"About 
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Multiply the second equation by -2 and add to the first
\n" ); document.write( "5u + 2v = -18
\n" ); document.write( "-2(3u+v=-7) yields -6u - 2v = 14
\n" ); document.write( "so
\n" ); document.write( "5u + -6u + 2v + -2v = -18 + 14
\n" ); document.write( "-u = -4
\n" ); document.write( "u = 4
\n" ); document.write( "...
\n" ); document.write( "Multiply the first equation by 3 and the second equation by -5
\n" ); document.write( "3(5u+2v=-18) yields 15u + 6v = -54
\n" ); document.write( "-5(3u+v=-7) yields -15u + -5v = 35
\n" ); document.write( "add them together
\n" ); document.write( "15u + -15u + 6v + -5v = -54 + 35
\n" ); document.write( "v = -19
\n" ); document.write( "...
\n" ); document.write( "Solutions
\n" ); document.write( "u = 4, v = -19
\n" ); document.write( "………………………
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