document.write( "Question 221111: x=number of white paint can
\n" ); document.write( "y=number of blue paints can
\n" ); document.write( "x=y=5 cans of paint
\n" ); document.write( "white paint = $ 24
\n" ); document.write( "blue paint = $ 28
\n" ); document.write( "24x + 28y = $132
\n" ); document.write( "How do you solve: 24x + 28y = 132 ?
\n" ); document.write( "How steps.
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Algebra.Com's Answer #165891 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
You can't solve it. There are 2 variables, x and y,
\n" ); document.write( "so you need 2 equations to solve.
\n" ); document.write( "You wrote
\n" ); document.write( "\"x=y=5\". I think you mistyped & actually
\n" ); document.write( "meant \"x+%2B+y+=+5\"
\n" ); document.write( "That's your other equation
\n" ); document.write( "Multiply both sides of this equation by \"24\"
\n" ); document.write( "\"24x+%2B+24y+=+120\"
\n" ); document.write( "Now subtract it from the other equation
\n" ); document.write( "\"24x+%2B+28y+=+132\"
\n" ); document.write( "\"-24x+-+24y+=+-120\"
\n" ); document.write( "\"4y+=+12\"
\n" ); document.write( "\"y+=+3\"
\n" ); document.write( "and, since \"x+%2B+y+=+5\"
\n" ); document.write( "\"x+=+2\"
\n" ); document.write( "Hope this helps
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