Answer:
a)32.86x10=328.6
b)32.86x100=3286
c)0.85x100=85
Step-by-step explanation:
Solving:

Delete the first parentheses by the distributive property, with the distributive property, we multiply the '3' first, then resolve it and the second parentheses eliminate by changing the sign:

<span>Now, put the numbers with letter (incognito) to the right and numbers without letter to the left, changing the signal when changing sides.
</span>



Answer: