Respuesta :

Rewrite the 3 fractions to have a common denominator:

1/4 = 5/20

2/5 = 8/20

3/4 = 15/20

Now solve:

5/20 - 8/20 + 15/20 = 12/20

12/20 can simplify to 3/5

Answer: 3/5

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