Tính:

a) 150 ´ 35 : 50	b) \(\frac{3}{5}:\frac{2}{9} - \frac{1}{{10}}\)
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a) 305 ´ 328 + 305 ´ 671 + 305

b) \(\frac{{11}}{4} \times \frac{8}{{14}} \times \frac{7}{{11}} \times \frac{5}{3}\)

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a) \(\frac{2}{3} + \frac{4}{9} = \)............................................

b) \(\frac{4}{5} \times \frac{3}{8} = \)............................................

c) \(\frac{2}{3} - \frac{1}{{12}} = \)............................................

d) \(\frac{1}{2}:\frac{2}{5} = \)............................................