Раскройте скобки и приведите подобные слагаемые 1. 3(5а+4)-11а
2. -0,2(4b-7)+1,4b
3. 3a(7-b)-7(b-3a)
4. -4(2k-9)-3(6k+1)
5. (3x-11)×0,2-5×(0,4 - 0,3x)
6. (18m-24n)-(5m+2n)
7. -3,5(3a-2b)+2(1,3a-b)
8. –(8a-13)+3(4-3a)
9. 2a+(3a-8b)
10. -5b-(8a-5b)
11. (5-2b)-(7+10b)
12. –(3c+5x)-(9c-6x)
13. x-(x-15)+(13+x)
14. (3a-21)-2a-(17-8a)
15. (11p+9c)-(12+11p+9c)
16. (2-4b)-(31b-6)-11
17. 14b-(15b+y)-(y+10b)
18. (2a-7y)-(5a-7y)
19. 18(-a-b+c)
20. (-m+8)-(m-4)+(-8+m)
21. –(a-b)+(-x+a)-(b-x)
22. –(x-9)+(a-5)
23. (a-7)-(5+a)+(9-a)
24. (b-4)-(-c+7)
25. 5b-(6b+a)-(a-6b)
26. a+(b-c+d)-(-c+f)
27. a-(b-c)+(d-c+f)
28. –(-2a-4)-(3+5a)
29. –(8c-4)+4
30. (5-3b)+(-3b-11)

1. 3 × (5а + 4) - 11а = 15а + 12 - 11а = 4а + 12

2. -0.2 × (4b - 7) + 1.4b = -0.8b + 1.4 + 1.4b = 0.6b + 1.4

3. 3a × (7 - b) - 7 × (b - 3a) = 21а - 3a × b - 7b + 21a = -3a × b - 7b

4. -4 × (2к - 9) - 3 × (6к + 1) = -8к + 36 - 18к - 3 = -36к + 33

5. (3х - 11) × 0.2 - 5 × (0.4 - 0.3х) = 0.6х - 2.2 - 2 + 1.5х = 2.1х - 4.2

6. (18m - 24m) - (5m + 2n) = -6m - 5m - 2n = -11m - 2n

7. -3.5 × (3а - 2b) + 2 × (1.3a - b) = -10.5а - 7b + 2.6a - 2b = -7.9a - 9b

8. -(8а - 13) + 3 × (4 - 3а) = -8а + 13 + 12 - 9а = 15 - 17a

9. 2а + (3а - 8b) = 5a - 8b

10. -5b - (8a - 5b) = -8a

11. (5 - 2b) - (7 + 10b) = 5 - 2b - 7 - 10b = -12b - 2

12. -(3c + 5x) - (9c - 6x) = -3c - 5x - 9c + 6x = x - 12c

13. x - (x - 15) + (13 + x) = x - x + 15 + 13 + x = x + 28

14. (3a - 21) - 2a - (17 - 8a) = 3a - 21 - 2a - 17 + 8a = 9a - 38

15. (11p + 9c) - (12 + 11p + 9c) = 11p + 9c - 12 - 11p - 9c = -12

16. (2 - 4b) - (31b - 6) - 11 = 2 - 4b - 21b + 6 - 11 = -25b - 3

17. 14b - (15b + y) - (y + 10b) = 14b - 15b - y - y - 10b = -11b - 2y

18. (2a - 7y) - (5a - 7y) = 2a - 7y - 5a + 7y = -3a

19. 18 × (-a - b + c) = 18c - 18a - 18b

20. (-m + 8) - (m - 4) + (-8 + m) = -m + 8 - m + 4 - 8 + m = 4 - m

21. -(a - b) + (-x + a) - (b - x) = -a + b - x + a - b + x = 0

22. -(x - 9) + (a - 5) = -x + 9 + a - 5 = 4 - x + a

23. (a - 7) - (5 + a) + (9 - a) = a - 7 - 5 - a + 9 - a = -a - 3

24. (b - 4) - (-c + 7) = b - 4 + c - 7 = b + c - 11

25. 5b - (6b + a) - (a - 6b) = 5b - 6b - a = -b - a

26. a + (b - c + d) - (-c + f) = a + b - c + d + c - f = a + b + d - f

27. a - (b - c) + (d - c + f) = a - b + c + d - c + f = a - b + d + f

28. -(-2a - 4) - (3 + 5a) = 2a + 4 - 3 - 5a = 1 - 3a

29. -(8c - 4) + 4 = -8c + 4 + 4 = 8 - 8c

30. (5 - 3b) + (-3b - 11) = 5 - 3b - 3b - 11 = -6b - 6