Question

Решите пропорцию
3 3/11:(х-2)=1 17/22:(-1 5/8)​

Answer 1

Решение:

$1 \frac{17}{22} \times (x - 2) = 3 \frac{3}{11} \times ( - 1 \frac{5}{8})$

$\frac{39}{22} \times (x - 2) = \frac{36}{11} \times ( \frac{ - 13}{8} )$

$\frac{39}{22x} - \frac{78}{22} = \frac{ - 117}{22}$

$\frac{39}{22} x = \frac{ - 117}{22} + \frac{78}{22}$

$\frac{39}{22} x = \frac{ - 39}{22}$

$x = \frac{ - 39}{22} \times \frac{22}{39}$

$x = - 1$