document.write( "Question 200061: add and subtract the following fractions.
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document.write( "2/3+5/7
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document.write( "3/4+7/12
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document.write( "4/9-1/8 \n" );
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Algebra.Com's Answer #150440 by jerrybassmasta(14)![]() ![]() ![]() You can put this solution on YOUR website! Adding and subtracting fractions are very simple, that is if yo know only one rule. \n" ); document.write( "The rule is to have common denominators.\r \n" ); document.write( "\n" ); document.write( "2/3+5/7 \n" ); document.write( "The common denominator for 3 and 7 will be 21. The easiest way is to just multiply them together. \n" ); document.write( "So you have 21, then you ask yourself. How many times did 3 go into 21. (7 times) So you multiply 2 by 7 as well. Same for the other side. How many times does, 7 go into 21. (3 times) So you multiply 5 by 3.\r \n" ); document.write( "\n" ); document.write( "Now you have. \n" ); document.write( "14/21+15/21 Now you can add them as normal numbers. (Remember you don't add the denominators)\r \n" ); document.write( "\n" ); document.write( "29/21 \n" ); document.write( "Reducing them are quite simple as well, all you do as subtract the top number from the bottom number. \n" ); document.write( "1 and 8/21\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3/4+7/12\r \n" ); document.write( "\n" ); document.write( "Using the same steps you should start off with. \n" ); document.write( "9/12+7/12 \n" ); document.write( "16/12 \n" ); document.write( "1 and 4/12 You can also simply simplify it to..... \n" ); document.write( "1 and 1/3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4/9-1/8 \n" ); document.write( "32/72-9/72 \n" ); document.write( "21/72 \n" ); document.write( "7/24 \n" ); document.write( " |