document.write( "Question 676824: the sum of two numbers is 18 seven times the smaller number minus twice the larger one is 36 what are the two numbers \n" ); document.write( "

Algebra.Com's Answer #420584 by ReadingBoosters(3246) $\"\"$ $\"About$

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x = one number
\n" ); document.write( "y = another number
\n" ); document.write( "...
\n" ); document.write( "x+y=18
\n" ); document.write( "7y-2x = 36
\n" ); document.write( "...
\n" ); document.write( "Rearrange the first equation as x = 18-y
\n" ); document.write( "Substitute into the second equation
\n" ); document.write( "7y - 2(18-y) = 36
\n" ); document.write( "Distribute the 2
\n" ); document.write( "7y - 2(18) - 2(-y) = 36
\n" ); document.write( "7y - 36 + 2y = 36
\n" ); document.write( "Isolate the y variable
\n" ); document.write( "9y = 36 + 36
\n" ); document.write( "9y = 72
\n" ); document.write( "Divide both sides by 9
\n" ); document.write( " $\"highlight_green%28y=8%29\"$
\n" ); document.write( "x = 18-8 = $\"highlight_green%28x=10%29\"$
\n" ); document.write( ".....................
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\n" ); document.write( "-Reading Boosters
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