Question

Evaluate the expression given the variable replacements.

20ab
--------
(a - b)

(if a = 4 and b = -2)

Answer 1

Answer:

$\frac{-80}{3}$

Step-by-step explanation:

• 20ab/(a-b)
• [$\frac{(20)(4)(-2)}{4-(-2)}$]/ Substitute the variables
• $\frac{-160}{6}$ Multiply numerator and add denominator
• $\frac{80}{3}$