Question

помогите пожалуйста решить пж только ​

Answer 1

$\frac{39}{203} \div \frac{78}{145} = \frac{39}{203} \times \frac{145}{78 } = \frac{1}{29} \times \frac{15}{2} = \frac{15}{58}$

$22 \frac{6}{7} \times 2\frac{11}{40} = \frac{160}{7} \times \frac{91}{40} = 4 \times 13 = 52$

$42 \frac{2}{3} \div 4 \frac{20}{27} = \frac{128}{ 3} \div \frac{128}{27} = \frac{128}{3} \times \frac{27}{128} = \frac{1}{3} \times 27 = 9$