document.write( "Question 172568: four times a number is 21 more than the number. What is the number? \n" ); document.write( "
Algebra.Com's Answer #127427 by Mathtut(3670)\"\" \"About 
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let the number be a
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\n" ); document.write( "4a=a+21
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\n" ); document.write( "3a=21.....subtracting a from both sides
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\n" ); document.write( "\"highlight%28a=7%29\" after dividing both sides by 3
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