Question

5(0,3+0,2x)-4 (1,2x+7)=3(1,3x+8)+3,4 помогите​

Answer 1

Ответ:

$1.5 + x - 4.8x - 28 = 3.9x + 24 + 3.4$

$- 26.5 - 3.8x = 3.9x + 27.4$

$- 3.8x - 3.9x = 27.4 + 26.5$

$- 7.7x = 53.9$

$x = - 7$