Question

Помогите срочно !!!! Все задания

Answer 1

1)

$x - 3(x + 1) = 2(3x - 2) + 7 \\ x - 3x - 3 = 6x - 4 + 7 \\ - 2x - 3 = 6x + 3 \\ - 2x - 6x = 3 + 3 \\ - 8x = 6 \\ x = - \frac{6}{8} \\ x = - \frac{3}{4}$

2)

$5(1 - 2x) = 4 - 3(2 + x) \\ 5 - 10x = 4 - 6 - 3x \\ - 10x + 3x = 4 - 6 -5 \\ - 7x = - 7 \\ x = 1$

3)

$\frac{2x - 3}{3} = \frac{1 - x}{4} \\ 4(2x - 3) = 3(1 - x) \\ 8x - 12 = 3 - 3x \\ 8x + 3x = 3 + 12 \\ 11x = 15 \\ x = \frac{15}{11}$

4)

$\frac{3x + 1}{4} - \frac{x}{6} = \frac{1 - x}{8 } \\ 6(3x + 1) - 4x = 3(1 - x) \\ 18x + 6 - 4x = 3 - 3x \\ 14x + 3x = 3 - 6 \\ 17x = - 3 \\ x = - \frac{3}{17}$

5)

$5(x - 3) - 2(x + 3) = \frac{1}{2} (2x + 4) + (3 - x) \\ 5x - 15 - 2x - 6 = x + 2 + 3 - x \\ 5x - 2x - x + x = 2 + 3 + 15 + 6 \\ 3x = 26 \\ x = \frac{26}{3}$