document.write( "Question 701643: What is the value of y if (3, y) is a solution to the equation 5x - 3y = 18? \n" ); document.write( "
Algebra.Com's Answer #432494 by josgarithmetic(39617)\"\" \"About 
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If point, (3, y) is a point on the line with the given equation, then the ordered pair must satisfy the equation. Plug in the numbers from the ordered pair.\r
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\n" ); document.write( "\n" ); document.write( "x=3, y=y (still unknown).
\n" ); document.write( "5x-3y=18
\n" ); document.write( "5*3-3*y=18
\n" ); document.write( "15-3*y=18 [substitute the values]
\n" ); document.write( "15-15-3y=18-15 [add -15 to both sides]
\n" ); document.write( "0-3y=3
\n" ); document.write( "3y=-3
\n" ); document.write( "y=-1. Done.\r
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\n" ); document.write( "\n" ); document.write( "Check:
\n" ); document.write( "5*3-3*(-1)=18?
\n" ); document.write( "15+3=18?
\n" ); document.write( "18=18, Yes. Done. Checks.
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