4 5\14+(5 1\12-3 4\12)=

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вопрос

4 5\14 + (5 1\12 - 3 4\12)
Convert all mixed numbers to improper fractions:
4 5\14 = (414 + 5) / 14 = 57/14
5 1\12 = (512 + 1) / 12 = 61/12
3 4\12 = (3*12 + 4) / 12 = 40/12

Now substitute the improper fractions into the equation:
57/14 + (61/12 - 40/12)
57/14 + 21/12
To add fractions with different denominators, we first need to find a common denominator:
14 and 12 both go into 168
57/14 = (5712) / 168 = 684/168
21/12 = (2114) / 168 = 294/168

Now we can add the fractions:
684/168 + 294/168 = 978/168

Finally, simplify the fraction:
978/168 = 163/28

Therefore, 4 5\14 + (5 1\12 - 3 4\12) = 163/28