Question

simplify.
7.8b - 3.2b

Explanation:

Step1: Factor out common variable $b$

$7.8b - 3.2b = b(7.8 - 3.2)$

Step2: Subtract the constants

$7.8 - 3.2 = 4.6$

Step3: Multiply back the variable

$b \times 4.6 = 4.6b$

Answer:

$4.6b$