Question

Раскройте скобки пожалуйста.

Answer 1

10) x + (3a - b + y) = x + 3a - b + y

12) n - (a - c + b + d) = n - a + c - b - d

14) m + (2 - (a + b) = m + (2 - a - b) = m + 2 - a - b

16) m - (2 + (a + b) = m - (2 + a + b) = m - 2 - a - b

18) m - (2 - (a + b) = m - (2 - a - b) = m - 2 + a + b

20) m - (2 - (a - b) = m - (2 - a + b) = m - 2 + a - b