Question

помогите решить пожалуйста

Answer 1

$- 4(3.6x - 4) - (7 - 2.1x) + 5(0.3x - 5) = - 14.4x + 16 - 7 + 2.1x + 1.5x - 25 = - 10.8x - 16 = - 10.8 \times ( - \frac{10}{27} ) - 16 = \frac{54 \times 10}{5 \times 27} - 16 = 4 - 16 = - 12$