document.write( "Question 848678: ABCD is a rectangle.If AB=7x-6 and CD=5x=30,find the value for x \n" ); document.write( "

Algebra.Com's Answer #511236 by jim_thompson5910(35256) $\"\"$ $\"About$

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AB and CD are opposite sides. With any rectangle, opposite sides are congruent or equal in length.\r
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\n" ); document.write( "\n" ); document.write( "AB = CD\r
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\n" ); document.write( "\n" ); document.write( "7x - 6 = 5x + 30 ... Note: I'm assuming you meant to say 5x + 30 instead of 5x = 30\r
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\n" ); document.write( "\n" ); document.write( "Now we solve for x\r
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\n" ); document.write( "\n" ); document.write( "7x - 6 = 5x + 30\r
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\n" ); document.write( "\n" ); document.write( "7x = 5x + 30 + 6\r
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\n" ); document.write( "\n" ); document.write( "7x - 5x = 30 + 6\r
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\n" ); document.write( "\n" ); document.write( "2x = 36\r
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\n" ); document.write( "\n" ); document.write( "x = 36/2\r
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\n" ); document.write( "\n" ); document.write( "x = 18 \n" ); document.write( "

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