Question

Решите: 5(х+1,4)=40х+0,2

Answer 1

5(x+1.4) = 40x + 0.2;

5x + 7 = 40x + 0.2;

40x - 5x = 7 - 0.2;

35x = 6.8;

x = 6.8 / 35 = 68/10 : 35 = 68/350;

Answer 2

$5(x+1,4)=40x+0,2 \\ 5x+7=40x+0,2 \\ 5x-40x=0,2-7 \\ -35x=- 6,8 \\ x= \frac{34}{175}$