Divide:

(a) 12x ÷ 2x

(b) 24ab ÷ 8a

(c) 9x ÷ 3y

(d) 25a² ÷ 5a

(e) 49xy ÷ 7xy

(a) $12x \div 2x = \dfrac{12x}{2x} = \dfrac{12}{2} \times \dfrac{x}{x}$ = 6.

(b) $24ab \div 8a = \dfrac{24ab}{8a} = \dfrac{24}{8} \times \dfrac{ab}{a}$ = 3b.

(c) $9x \div 3y = \dfrac{9x}{3y} = \dfrac{9}{3} \times \dfrac{x}{y}$ = 3 $\dfrac{x}{y}$.

(d) $25a^2 \div 5a = \dfrac{25a^2}{5a} = \dfrac{25}{5} \times \dfrac{a^2}{a}$ = 5a.

(e) $49xy \div 7xy = \dfrac{49xy}{7xy} = \dfrac{49}{7} \times \dfrac{xy}{xy}$ = 7.