Question

плиз, хотя бы ответы!!!¡!

Answer 1

1) 10а + (4 - 4а) = 10а + 4 - 4а = 6а + 4
2) -(4b - 10) + (4 - 5b) = -4b + 10 +4 - 5b =-9b +14
3) (c - 5d) - (-d + 5c) = c - 5d + d - 5c = -4c - 4d
4) -(5n + m) + (-4n + 8m) - (2m - 5n) = -5n - m - 4n + 8m - 2m +5n = 5m - 4n 

Answer 2

2) -(4b - 10) + (4 - 5b) = -4b + 10 +4 - 5b =-9b +14