A$)$ Enter the expression

$8$

x

$2$

$$

$5$

x

$+$

$4$

:

Your input:

B$)$ Enter the expression

$$

$3$

y

$$

$4$

$8$

y

$2$

:

Your input:

C$)$ Enter the expression

w

$2$

$+$

$8$

$$

w

$+$

$1$

:

Your input:

D$)$ This last one will require you enter an equation:

p

$$

$6$

$=$

$3$

$7$

$($

t

$$

$8$

$)$

Your input: