Question

6. Раскройте скобки: 3х – (5х – (3x-1).​

Answer 1

3x-(5х-(3х-1))

3х-(5х-3х+1)

3х-5х+3х-1

х-1

Answer 2

Ответ:

$3x - (5x - (3x - 1)) = \\ 3x - (5x - 3x + 1) = \\ 3x - (2x + 1) = \\ 3x - 2x - 1 = x - 1$