Question

ПОМОГИТЕ ПЖ!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$0.9x - 0.6x + 1.8 = 0.4x - 2.6 \\ 0.3x - 0.4x = - 2.6 - 1.8 \\ - 0.1x = - 4.4 \\ x = 44 \\ \\ - 1.2x + 0.4 + 6.4x - 2.4 = 5 - 3.8x - 4 \\ 5.2x + 3.8x = 1 + 2 \\ 9x = 3 \\ x = 3 \\ \\ 4 \times 0.08 - 4 \times 0.6y + 0.4 = 5 \times 0.04 - 5 \times 0.5y \\ 0.32 - 2.4y + 0.4 = 0.2 - 2.5y \\ - 2.4y + 2.5y = 0.2 - 0.72 \\ 0.1y = - 0.52 \\ y = - 5.2$