Plssss help


I have to find what the letter is equal to


1. C divided by4=5
C=

2. 9d=27
D=

3. 2a+9=17
A=

4. 4b-12=24
B=

5. True or false
K is 6,are the following equations true or false

1. Kx8=54
2. 9+k=2k+3


Guys plsss urgent