Solutions To Mathematics Textbooks/Pure Mathematics 1/Chapter 1

Exercise 1A

1.

1. $9x$
2. $p-13$
3. $k-4m+4n$
4. $0$
5. $r+2s-15t$

2.

1. $4(x+2y)$
2. $3(4a+5b-6c)$
3. $12(6f+3g-4h)$
4. $p(p-q+r)$
5. $12k(k+12m-6n)$

3.

1. $28(x+y)$
2. $7b+13c$
3. $-p+24q+33r$
4. $2(5l+3w-h)$
5. $2(w+2v)$

4.

1. $2ab$
2. $km-mn$
3. $2pq-sq$
4. $4x+8$
5. $-2$

5.

1. $6x^3{y}^2$
2. $30a^3{b}^3{c}^4$
3. $k^2{m}^2{n}^2$
4. $162p^4{q}^4{r}^4$
5. $24r^2{s}^2{t}^2{u}^2$

6.

1. $\frac{b}{c}$
2. $\frac{e}{2f}$
3. $\frac{x}{5}$
4. $2a$
5. $\frac{2}{pr}$

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