document.write( "Question 514129: A board that is 81 cm long is cut into two pieces. The first piece is 7 cm less than three times the second. Find the length of each piece? Translate the problem into an equation.
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Algebra.Com's Answer #343292 by oberobic(2304) $\"\"$ $\"About$

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2 pieces: x, y
\n" ); document.write( "x+y = 81
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\n" ); document.write( "x = 3y -7
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\n" ); document.write( "substitute
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\n" ); document.write( "3y-7 +y = 81
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\n" ); document.write( "4y = 88
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\n" ); document.write( "y = 22
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\n" ); document.write( "x = 3(22)-7
\n" ); document.write( "x = 66-7
\n" ); document.write( "x = 59
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\n" ); document.write( "Check the solution.
\n" ); document.write( "22+59 = 81
\n" ); document.write( "OK.
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\n" ); document.write( "Answer the two pieces are: 22 and 59 cm. \n" ); document.write( "

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