SOLUTION: How do solve this fraction in simplest form 2/7-3/4

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Question 397959: How do solve this fraction in simplest form 2/7-3/4
Found 2 solutions by EricL, Tatiana_Stebko:
Answer by EricL(29) About Me  (Show Source):
You can put this solution on YOUR website!
Hello!
%282%29%2F%287%29-%283%29%2F%284%29
Combine -%283%29%2F%284%29%2B%282%29%2F%287%29 into a single expression by finding the least common denominator (LCD). The LCD of -%283%29%2F%284%29%2B%282%29%2F%287%29 is 28.
-%2813%29%2F%2828%29
Answer: -%2813%29%2F%2828%29
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Any questions? Just ask!
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-Eric L :)

Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
2/7-3/4=8/28-21/28=(8-21)/28=-13/28