Решите линейные уравнения

1) $7x=1 \Rightarrow x = \frac{1}{7}$ **Ответ:** $x = \frac{1}{7}$ 2) $5x-3=x-19$ $5x-x = -19+3$ $4x = -16$ $x = \frac{-16}{4}$ $x = -4$ **Ответ:** $x = -4$ 3) $4x+2=5x$ $2 = 5x-4x$ $2 = x$ **Ответ:** $x = 2$ 4) $4-5x=5$ $-5x = 5-4$ $-5x = 1$ $x = \frac{1}{-5}$ $x = -\frac{1}{5}$ **Ответ:** $x = -\frac{1}{5}$ 5) $-9x+5=6x-4$ $5+4 = 6x+9x$ $9 = 15x$ $x = \frac{9}{15}$ $x = \frac{3}{5}$ **Ответ:** $x = \frac{3}{5}$ 6) $-5x-1=2x+2$ $-1-2 = 2x+5x$ $-3 = 7x$ $x = -\frac{3}{7}$ **Ответ:** $x = -\frac{3}{7}$ 7) $5x-9=3x+1$ $5x-3x = 1+9$ $2x = 10$ $x = \frac{10}{2}$ $x = 5$ **Ответ:** $x = 5$ 8) $11x=4x$ $11x-4x = 0$ $7x = 0$ $x = \frac{0}{7}$ $x = 0$ **Ответ:** $x = 0$ 9) $-2y+14=8y-6$ $14+6 = 8y+2y$ $20 = 10y$ $y = \frac{20}{10}$ $y = 2$ **Ответ:** $y = 2$ 10) $0,3x+0,15=0$ $0,3x = -0,15$ $x = \frac{-0,15}{0,3}$ $x = -0,5$ **Ответ:** $x = -0,5$