document.write( "Question 172827: (3i)-(7i)-(-1-i) My teacher gave me the answer which is 1-(3i) I can not figure out how she did and need to know for a test tomorrow Thank you \n" ); document.write( "
Algebra.Com's Answer #127670 by Mathtut(3670)\"\" \"About 
You can put this solution on YOUR website!
\"3i-7i-%28-1-i%29\" .......-(-1-i) = 1+i
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\n" ); document.write( "so\"-4i%2B1%2Bi\"
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\n" ); document.write( "\"-3i%2B1\"or \"highlight%281-3i%29\"
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