Question

1.Решите уравнение 1) -(2x-4)-3x=1-2(3-2x) 2) 1/2-1/5x=1-2x

Answer 1

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Answer 2

1)
$-(2x - 4) - 3x = 1 - 2(3 - 2x) \\ -2x + 4 - 3x = 1 - 6 + 4x \\ -2x - 3x - 4x = 1 - 6 - 4 \\ - 9x = -9 \\ x = 1$
2)
$\frac{1}{2} - \frac{1}{5}x = 1 - 2x \\ \frac{10 \times 1}{2} - \frac{10 \times 1}{5}x = 10 \times 1 - 2 \times 10x \\ 5 - 2x = 10 - 20x \\ - 2x + 20x = 10 - 5 \\ 18x = 5 \\ x = \frac{5}{18}$