The answer is 45, because if you have 45(x)-15(y)=30
Answer:
x= 6
Step-by-step explanation:

You will subtract 10x from 12x and get 2x

Subtract 4 from 16 to get 12

You will then divide both sides by 2
= 
x= 6
The second one is hard to read but since ∠3 is 54° you should just start from there
Hope this helps
Answer:
1 and 1/4
Step-by-step explanation:
3*1 +4*1/4
=3+1=4
I’m pretty sure it is C but I’m not sure if I’m right or not