document.write( "Question 666548: Sam is twice as old as her friend Peter. Peter is 7 years older than Alice. In 5 years, Sam will be three times as old as Alice. How old is Peter now? \n" ); document.write( "
Algebra.Com's Answer #414545 by ReadingBoosters(3246)\"\" \"About 
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Establish variables.
\n" ); document.write( "x = sam
\n" ); document.write( "y = peter
\n" ); document.write( "z = alice
\n" ); document.write( "...
\n" ); document.write( "Given
\n" ); document.write( "x = 2y
\n" ); document.write( "y = z+7
\n" ); document.write( "x = 3z+5
\n" ); document.write( "Solve for y
\n" ); document.write( "...
\n" ); document.write( "Set x variables as equal to each other
\n" ); document.write( "2y = 3z+5
\n" ); document.write( "Substitute y
\n" ); document.write( "2(z+7) = 3z+5
\n" ); document.write( "Distribute 2
\n" ); document.write( "2z + 14 = 3z + 5
\n" ); document.write( "Combine like terms
\n" ); document.write( "14 - 5 = 3z - 2z
\n" ); document.write( "z = 9
\n" ); document.write( "...
\n" ); document.write( "y = z + 7 = \"highlight_green%2816%29\" the age of Peter.
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\n" ); document.write( "Delighted to help.
\n" ); document.write( "-Reading Boosters
\n" ); document.write( "Wanting for others what we want for ourselves.
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