You can multiply either the top or bottom equation by -1 so lets say you apply it to the bottom equation it’ll look like this:
-9x + 9y = 18
6x - 9y = 12
then the +9y and -9y will cancel out
-9x = 18
6x =12
then you add the two equations together
-3x = 30
divide both sides by -3
x = -10
2(c-3)=s
because you have to subtract 3 years from sherman's age first, so you need the parentheses
Answer:
1,848
Step-by-step explanation:

The five types of infinitives are full infinitives, bare infinitives, split infinitives, continuous infinitives , and perfect continuous infinitive.
Explanation:
Types of infinitives:
Five types of infinitives are as follow:
- Full infinitives : Add 'to' Infront of the verb to complete the the situation.
- Bare infinitives: here " to" get omitted from the sentence.
- Split infinitives : Here adjectives slides between infinitives marker.
To hear : full infinitives changes to split infinitives : to slowly hear.
- Continuous infinitives: Action going for certain period of required time.
Example : to be missing
- Perfect continuous infinitives: prior to a time :
Example : to have seen
Therefore, there are are five types of infinitives .
Learn more about infinitives here
brainly.com/question/1219442
#SPJ4