1. Решите уравнение -9x = 3 - 6(8x - 6).

Привет! Давай решим эти уравнения по порядку. Главное — правильно раскрыть скобки и перенести слагаемые с переменной $x$ в одну сторону, а числа — в другую. 1. $-9x = 3 - 6(8x - 6) \implies -9x = 3 - 48x + 36 \implies 39x = 39 \implies x = 1$ 2. $-7 - 8(9 - x) = -39 \implies -7 - 72 + 8x = -39 \implies 8x - 79 = -39 \implies 8x = 40 \implies x = 5$ 3. $8x - 3 = 3x - 3(x - 7) \implies 8x - 3 = 3x - 3x + 21 \implies 8x = 24 \implies x = 3$ 4. $-x - 8(x - 2) = -4x - 14 \implies -x - 8x + 16 = -4x - 14 \implies -9x + 16 = -4x - 14 \implies -5x = -30 \implies x = 6$ 5. $9(-7x + 8) - x = 8x \implies -63x + 72 - x = 8x \implies -64x + 72 = 8x \implies 72 = 72x \implies x = 1$ 6. $-2 - 5x = -5(-2x + 5) - 22 \implies -2 - 5x = 10x - 25 - 22 \implies -2 - 5x = 10x - 47 \implies 45 = 15x \implies x = 3$ 7. $-5(x + 3.6) = 7x \implies -5x - 18 = 7x \implies -18 = 12x \implies x = -1.5$ 8. $25(x + 30) = -18 \implies 25x + 750 = -18 \implies 25x = -768 \implies x = -30.72$ 9. $2 - 3(4 - 8x) = 14 \implies 2 - 12 + 24x = 14 \implies -10 + 24x = 14 \implies 24x = 24 \implies x = 1$ 10. $7x = 28 - 8(2x - 8) \implies 7x = 28 - 16x + 64 \implies 7x = 92 - 16x \implies 23x = 92 \implies x = 4$