Question

we can make sure answer

Answer 1

$\frac{3x - 2}{10} - \frac{x + 3}{7} + \frac{4x - 7}{3} = x - 1 \\ \frac{63x - 42 - 30x - 90 + 280x - 490}{210} = x - 1 \\ 343x - 30x - 622 = 210x - 210 \\ 313x - 210x = 622 - 210 \\ 103x = 412 \\ x = \frac{412}{103} = 4$