20 Rewrite the following expressions using shortcut operators. a. w = w + b. x = x - d. z = z - 1 E 22 If R = 8, what are the values of R and s after the following statement? S = ++R: 24 Rewrite the following code using a for loop: whilem 20 Blend nne m5 m2 26 Bouwrith the following code using a whoop