Question

3/5х+0,7х+х=69
Задачю надо решить через Х

Answer 1

0.6x+0.7x+x=69

2.3x=69

x=69:2.3

x=30

Answer 2

$\frac{3}{5}x + \frac{7}{10}x + x = 69 \\ \frac{23}{10}x = 69 \\ x = 30$