document.write( "Question 250134: 5r-7s=-28
\n" ); document.write( "7r+5s=94
\n" ); document.write( "solve by the elimination method
\n" ); document.write( "the solution it says is an ordered pair
\n" ); document.write( "Can anyone help please? \n" ); document.write( "
Algebra.Com's Answer #182105 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
an ordered pair means the two solutions are arranged (r,s)
\n" ); document.write( "5r-7s=-28
\n" ); document.write( "7r+5s=94
\n" ); document.write( "\"by elimination\" means that we combine the two equations in such a way that one of the terms ( r or s) is eliminated.
\n" ); document.write( "That can be by addition, subtraction, mulitplication or division of the two equations.
\n" ); document.write( "if we multiply the first by 5 and the second by 7 we can add them and eliminate s\r
\n" ); document.write( "\n" ); document.write( "5r-7s=-28
\n" ); document.write( "7r+5s=94
\n" ); document.write( "25r-35s=-28*5
\n" ); document.write( "49r+35s=94*7
\n" ); document.write( "add them
\n" ); document.write( "74r=-28*5+94*7
\n" ); document.write( "multiply out and add
\n" ); document.write( "then divide both sides by 74 to get r
\n" ); document.write( "then take that solved r and plug it into ANY of the equations to get s
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