document.write( "Question 148484: Solve using addition and multiplication principals.\r
\n" ); document.write( "\n" ); document.write( "5 + 4x < 21
\n" ); document.write( "The solution set is {x/x ??}\r
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\n" ); document.write( "\n" ); document.write( "Solve the following system of equation\r
\n" ); document.write( "\n" ); document.write( "x + 4y = 2 (1)
\n" ); document.write( "x = 7 -4y (2)
\n" ); document.write( "What is the soltution of the system?
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Algebra.Com's Answer #739460 by ikleyn(52800)\"\" \"About 
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