Question

Multiply (in vertical and horizontal arrangement):

(1) 6 × (y – 3)

Answer 1

(1) 6 × (y – 3)
Vertical arrangement:
$\begin{array}{c}\begin{array}{cccc}& y& -& 3\end{array}\\ \begin{array}{cccc}\times & & & 6\end{array}\\ \overline{\underline{\begin{array}{cccc}& 6y& -& 18\end{array}}}\end{array}$
Horizontal arrangement:
6 × (y – 3)
= (6 × y) – (6 × 3)
= 6y – 18