помогите пожалуйста математика 3 уравнения
[tex]5 - 7x + 4x = 4 \frac{4}{7 } \\ 3(x - \frac{4}{19}) = 2 \\ 4x - \frac{4}{9} = \frac{5}{6} + 2x[/tex]
[tex]5 - 7x + 4x = 4 \frac{4}{7 } \\ 3(x - \frac{4}{19}) = 2 \\ 4x - \frac{4}{9} = \frac{5}{6} + 2x[/tex]
Answers & Comments
Ответ:
Объяснение:
1) 5 - 7x + 4x = 4 4/7
5 - 3x = 4 4/7
3x = 3/7
x = 7
2) 3(x - 4/19) = 2
3x - 12/19 = 2
3x = 2 12/19
x = 1,14
3) 4x - 4/9 = 5/6 + 2x
4x - 2x = 5/6 + 4/9
2x = 1 5/18
x = 1 13/23