document.write( "Question 61045: The instructions are to tell whether each series has a sum. if it does give its value.\r
\n" ); document.write( "\n" ); document.write( "The problem is 0.7 + 0.07 + 0.007 + 0.0007\r
\n" ); document.write( "\n" ); document.write( "i have no clue how to solve this
\n" ); document.write( "Please help
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Algebra.Com's Answer #41960 by joyofmath(189)\"\" \"About 
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Let \"S+=+0.7+%2B+0.07+%2B+0.007+%2B+0.0007+%2B+....\"
\n" ); document.write( "Multiply each term in S by 10.
\n" ); document.write( "Then \"10S+=+7%2B+0.7+%2B+0.07+%2B+0.007+%2B+0.0007+%2B+....\"
\n" ); document.write( "Then subtract S from 10S:
\n" ); document.write( "\"10S+-+S+=+7\" or \"9S+=+7\" or \"S+=+7%2F9\"
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