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OpenStudy (anonymous):
-20/21-7/30-(-11)
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sam (.sam.):
-(20)/(21)-(7)/(30)-(-11) Multiply -1 by each term inside the parentheses. -(20)/(21)-(7)/(30)+11 (2061)/(210) Combine -(7)/(30)+11-(20)/(21) into a single expression by finding the least common denominator LCD. The LCD of -(7)/(30)+11-(20)/(21) is 210. 687/70
OpenStudy (anonymous):
Thanks for the help. I was having trouble with the least common denominator.
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