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Lynna [10]
3 years ago
14

23) —2n- (9 - 10n)

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

Answer:

23. 8n - 9

24. 55 - 45n

25. 69a - 10

26. -30m + 33

27. -4 + 96x

28. -8n + 26

29. -25b - 20

30. -71n - 9

Step-by-step explanation:

23. -2n - 9 + 10n

Collect like terms

= 8n - 9

24. 10 - 45n + 45

Collect like terms

= 55 - 45n

25. 9a + 60a - 10

Collect like terms

= 69a - 10

26. -54m + 27 + 6 + 24m

Collect like terms

= -30m + 33

27. -10 + 90x + 6x - 60

Collect like terms

= -4 + 96x

28. -10n + 20 + 2n + 6

Collect like terms

= -8n + 26

29. -30b - 30 + 5b + 10

Collect like terms

= -25b - 20

30. -7n - 21 - 8 - 64n

Collect like terms

= -71n - 9

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