Page 184 - Mathematics_F1

3. 8y 5. – 4w 7. 6n 9. 6k 11. y + 1
13. – 12 15. 29 17. 118 19. –50 21. – 3.6

Exercise 5.2
FOR ONLINE READING ONLY
1. 25x + 30m + 20y 3. 4p – 10q + 6 Tanzania Institute of Education

5. ar – 7br + 9cr 7. 15ax + 9ay – 9az
9. 12abx – 4aby – 14abz 11. 10ax + 5bx + 15cx
13. – 10np + 16nq + 6n 15. 8amn – 16bmn + 40cmn
17. 12auv – 28uv 19. – 6ax + 2ab
21. ax + nm – 2cz 23. 3(3a – 2b + c)
25. 5(a + 4b – 2c) 27. 2a(2t – 3r + 4m)

29. 2a(6p – q + 4r– 3s )

Exercise 5.3

1. 12h – 20 3. 4p – 3 5. 2x – 3y
34y + 28
_
b − 4c

7. 1 _ 9. a + 3b 11. _
2
8
15
Exercise 5.4
1
83s −
1. 5x = 20 7. 2s += 7 13. 4x = + y
2
8 4(x +
3. x + 21 125= 9. 5x += 8) 4
5. 99 m− = 63 11. 5x + 6y = 15
Exercise 5.5

1. (a) x = 13 (h) x = 40 (o) x = 10
(b) x = 16 (i) x = 10
(c) x = (j) x = 20
5
25
(d) x = 25 (k) x = 24
13
6
(e) x = (l) x =
2 27 Mathematics Form One
(f) x = (m) x =
8
7
(g) x = 10 (n)

177

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Mathematics form 1.indd 177 21/10/2025 10:50:36
Mathematics form 1.indd 177