Ответ:

1) -6x+9-8 = -6x+1

2) 12x--12x-36 = --36

3) 4-12ab+9-4+24ab = 12ab+9

4) 4-12xy+9+16+16xy+4 = 20+4xy+13

5) -10x+25--3x = -13x+25

6) 36-12ab+-36-18ab+4ab+2 = -26ab+3

7) 3x(25+10x+)-x(9-36x+36) = 75x+30+3-9+36-36x = 39x+66-6

8) -4x+4+-1 = 2-4x+3

9) 9-4--6ab-9 = 8-13-6ab

10) +3y-4y-12++2y+1-49+ = 3+y-60

Объяснение: