Question

plz solve this question

Answer 1

Refer to the attachment

Hope it helps..

Answer 2

$5a^2b^2(7c - 21) \div 15ab(c - 3)$

Write as fraction:

$= \dfrac{5a^2b^2(7c - 21)}{ 15ab(c - 3)}$

Cross out common factor 5ab:

$= \dfrac{ab(7c - 21)}{ 3(c - 3)}$

Take out common term 7 from denominator:

$= \dfrac{7ab(c - 3)}{ 3(c - 3)}$

Cross out common factor c - 3:

$= \dfrac{7ab}{3}$