Question

скажите пж дам 15 баллов! (3 2/3 + 1,75) : (6 7/12 - 2,25) * 0,8 и 1/3x + 1/8x = 34/45

Answer 1

$(\frac{11}{3} + \frac{175}{100}) : (\frac{79}{12} - \frac{225}{100}) * 0,8 = 1$

1) $\frac{11}{3} + \frac{175}{100} = \frac{1100}{300} + \frac{525}{300} = \frac{1625}{300}$

2) $\frac{79}{12} - \frac{225}{100} = \frac{1975}{300} - \frac{675}{300} = \frac{1300}{300}$

3) $\frac{1625}{300} * \frac{300}{1300} = \frac{65}{52}$

4) $\frac{65}{52} * \frac{8}{10} = \frac{26}{26} = 1$  

$\frac{1}{3}x + \frac{1}{8}x = \frac{34}{45}$

$\frac{8}{24}x + \frac{3}{24}x = \frac{11}{24}x$

$x = \frac{34}{45} - \frac{11}{24}$

$x = \frac{272}{360} - \frac{165}{360}$

$x = \frac{107}{360}$