Question

Решите уравнение
( 3$\frac{1}{3}$x-1$\frac{2}{5}$ )*2=-2$\frac{2}{15}$

Answer 1

3 и 1\3 = 10\3
1 и 2\5 = 7\5
2 и 2\15 = 32\15

(10x\3 - 7\5)*2 = -32\15
20x/3 - 14\5 = -32\15
20x\3 = -32\15 + 14\5
20x\3 = (-32 + 42)\15
20x = 30\15
20x = 2
x = 0.1