Question

Реши уравнение:
−20−1,8x=48,9+3,5x.

Answer 1

$- 20 - 1.8x = 48.9 + 3.5x \\ - 1.8x - 3.5x = 48.9 + 20 \\ - 5.3x = 68.9 \\ \boldsymbol{x = - 13}$