=\(\frac{28}{15}\)x\(\frac{1}{4}\)x3+\(\frac{17}{60}\):1+\(\frac{23}{24}\)
=\(\frac{7}{15}\)x3+\(\frac{17}{60}\)+\(\frac{23}{24}\)
=\(\frac{7}{5}\)+\(\frac{17}{60}\)+\(\frac{23}{24}\)
=\(\frac{168}{120}\)+\(\frac{34}{120}\)+\(\frac{115}{120}\)
=\(\frac{317}{120}\)