д) \( 4.7 - 1.1x = 0.5x - 3.3 \)\( 4.7 + 3.3 = 0.5x + 1.1x \)\( 8 = 1.6x \)\( x = \frac{8}{1.6} \)\( x = 5 \)
Ответ: x = 5