Реши уравнения: 1) 3x = 24 - x

Привет! Давай решим эти уравнения вместе. **Часть 1** 1) $3x = 24 - x$ $3x + x = 24$ $4x = 24$ $x = 6$ 2) $5x + 4 = 39 - 2x$ $5x + 2x = 39 - 4$ $7x = 35$ $x = 5$ 3) $8 - 3x = 2x - 7$ $-3x - 2x = -7 - 8$ $-5x = -15$ $x = 3$ 4) $0.5x + 1.2 = 2.7 - 0.2x$ $0.5x + 0.2x = 2.7 - 1.2$ $0.7x = 1.5$ $x = \frac{1.5}{0.7} = \frac{15}{7} \approx 2.14$ 5) $6.6 - 1.2x = 0.3x - 0.9$ $-1.2x - 0.3x = -0.9 - 6.6$ $-1.5x = -7.5$ $x = 5$ 6) $\frac{2}{5}x + 5 = \frac{1}{4}x + 8$ $\frac{2}{5}x - \frac{1}{4}x = 8 - 5$ $\frac{8}{20}x - \frac{5}{20}x = 3$ $\frac{3}{20}x = 3$ $x = \frac{3 \cdot 20}{3} = 20$ **Часть 2** 1) $5(x - 1) = 2x + 7$ $5x - 5 = 2x + 7$ $5x - 2x = 7 + 5$ $3x = 12$ $x = 4$ 2) $7 - 3(x - 2) = 4 - x$ $7 - 3x + 6 = 4 - x$ $-3x + x = 4 - 7 - 6$ $-2x = -9$ $x = \frac{9}{2} = 4.5$ 3) $(4x + 3) - (x - 2) = 12$ $4x + 3 - x + 2 = 12$ $3x + 5 = 12$ $3x = 7$ $x = \frac{7}{3} \approx 2.33$ **Ответы:** **Часть 1** 1) $x = 6$ 2) $x = 5$ 3) $x = 3$ 4) $x \approx 2.14$ 5) $x = 5$ 6) $x = 20$ **Часть 2** 1) $x = 4$ 2) $x = 4.5$ 3) $x \approx 2.33