document.write( "Question 939629: PQRS is a parallelogram. Find x. S(4x-15), P(3x-12), R(x+6), Q(2x+3) \n" ); document.write( "
Algebra.Com's Answer #572612 by laoman(51)\"\" \"About 
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For a parallelogram, the two opposite angle are always equal,
\n" ); document.write( "Therefore, what we have to do is take two of the opposite angles given and equate to find x,
\n" ); document.write( "we can use P and R or S and Q
\n" ); document.write( "If I decide to use P and R, \"3%2Ax-12+=x%2B6\"
\n" ); document.write( "Solving the equation, 2*x =18
\n" ); document.write( "x = 18/2 = 9\r
\n" ); document.write( "\n" ); document.write( "Also using S and Q,
\n" ); document.write( "\"4%2Ax-15=2%2Ax%2B3\"
\n" ); document.write( "2*x =18
\n" ); document.write( "and x =2\r
\n" ); document.write( "\n" ); document.write( "QED
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