Question

пж люди добрые помогите
пж пж пж пж пж ^*​

Answer 1

$(24 \frac{4}{25} - x) - 17 \frac{6}{25} = 2 \frac{23}{25} \\ \frac{604}{25} - x - \frac{431}{25} = \frac{73}{25} \\ \frac{173}{25} - x = \frac{73}{25} \\ - x = \frac{73}{25} - \frac{173}{25} \\ - x = - \frac{100}{25} \\ x = 4$

$20 \frac{1}{19} - (x - 4 \frac{17}{19} ) = 7 \frac{18}{19} \\ \frac{381}{19} - x + \frac{93}{19} = \frac{151}{19} \\ \frac{474}{19} - x = \frac{151}{19} \\ - x = \frac{151}{19} - \frac{474}{19} \\ - x = - \frac{323}{19} \\ x = 17$

$0.83x + 0.025 - 0.0042 = 0.03 \\ \frac{83}{100} x + \frac{25}{1000} - \frac{42}{10000} = \frac{3}{100} \\ \frac{83}{100} x + \frac{250 - 42}{10000} = \frac{3}{100} \\ \frac{83}{100} x + \frac{208}{10000} = \frac{3}{100} \\ \frac{83}{100} x = \frac{3}{100} - \frac{208}{10000} \\ \frac{83}{100} x = \frac{300 - 208}{10000} = \frac{92}{10000} \\ x = \frac{92}{10000} \div \frac{83}{100} = \frac{92}{10000} \times \frac{100}{83} \\ x = \frac{92}{8300} = \frac{23}{2075}$