document.write( "Question 652669: I am kind of unsure of my response for this equation:\r
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document.write( "It asks me to rewrite the equation in terms of \"w\"
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document.write( "A=2(L+W)\r
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document.write( "This is my work...
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document.write( "A=2(L+W)
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document.write( "A=2L+2W
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document.write( "A-2L=2W
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document.write( "((A-2L)/2)=W --------> I'm not sure if this would be my final answer or could it be (((A/2)-L))=W\r
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document.write( "Please explain to me why my first solution is right/wrong. Thank you. \n" );
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Algebra.Com's Answer #408052 by DrBeeee(684)![]() ![]() ![]() You can put this solution on YOUR website! Either answer is correct. I usually hedge my answer by giving both as follows; \n" ); document.write( "(1) W = (A - 2L)/2 or \n" ); document.write( "(2) W = A/2 - L \n" ); document.write( "and let the reader choose the preferred form. \n" ); document.write( "Note a couple of differences that I have from your answers. The first is that you always put the variable that you want, W in this case, on the LEFT side of the equation. Then you read it as W = something, not something = W. The second is that I omit all of the unneccessary parentheses in the answer. This gives a neater appearance to the answer and easier for the reader to \"see\" the answer. I also have a comment on the given formula. It is the formula for the perimeter of a rectangle, so I'd expect the standard practice of using the variable p, instead of A, which is usually used for area as in \n" ); document.write( "(3) A = lw. \n" ); document.write( "In addition, lower case letters are used for length and width as in \n" ); document.write( "(4) p = 2l + 2w. \n" ); document.write( "(My preference) Answer: w = p/2 - l \n" ); document.write( " |