Worked Solution #5 of 5, increasing in difficulty.

Expand the following:

\begin{align} \quad\quad\quad\quad\quad\quad\quad\quad\Large (4x-3)\color{#0000FF} {(5x-7)}\\ \\ &\cssId{Step1}{\Large =\color{#0000FF} { 5x}(4x-3) \color{#0000FF} {-7}(4x-3)}\\ \\ &\cssId{Step2}{\Large = 20x^2 - 15x - 28x + 21}\\ \\ &\cssId{Step3}{\Large = 20x^2 - 43x + 21}\\ \\ \end{align}