document.write( "Question 302671:
\n" ); document.write( "There is an equilateral triangle where each side is 2x-7, x+y-9 and y+5
\n" ); document.write( "Calculate the value of x and find the length of the sides of the triangle \n" ); document.write( "
Algebra.Com's Answer #217044 by ankor@dixie-net.com(22740)\"\" \"About 
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There is an equilateral triangle where each side is 2x-7, x+y-9 and y+5
\n" ); document.write( ":
\n" ); document.write( "All side equal, therefore
\n" ); document.write( "2x - 7 = x + y - 9
\n" ); document.write( "2x - x - y = -9 + 7
\n" ); document.write( "x - y = -2
\n" ); document.write( "and
\n" ); document.write( "2x - 7 = y + 5
\n" ); document.write( "2x - y = 5 + 7
\n" ); document.write( "2x - y = 12
\n" ); document.write( "Subtract the 1st equation from the above equation
\n" ); document.write( "2x - y = 12
\n" ); document.write( " x - y = -2
\n" ); document.write( "---------------subtraction eliminates y
\n" ); document.write( "x = 14
\n" ); document.write( "find y
\n" ); document.write( "x - y = -2
\n" ); document.write( "14 - y = -2
\n" ); document.write( "-y = -2 -14
\n" ); document.write( "-y = -16
\n" ); document.write( "y = 16
\n" ); document.write( ":
\n" ); document.write( "Find the 3 sides, a, b, c
\n" ); document.write( "a = 2x-7
\n" ); document.write( "a = 2(14) - 7
\n" ); document.write( "a = 28 - 7
\n" ); document.write( "a = 21
\n" ); document.write( ":
\n" ); document.write( "b = x + y - 9
\n" ); document.write( "b = 14 + 16 - 9
\n" ); document.write( "b = 21
\n" ); document.write( ":
\n" ); document.write( "c = y + 5
\n" ); document.write( "c = 16 + 5
\n" ); document.write( "c = 21 \n" ); document.write( "
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