Answer:
I'm not sure but I think it is C.
13. r= 16
14. r= 12
15. n= 12
16. k= 0
17. b= -9
18. m= -12
Answer: x=-63/73
Step-by-step explanation:
Multiply both sides by 12, Move constant to the right hand side and change its sign, Move variable to the left hand side and change its sign, collect like terms, divide both sides of the equation by -73, x=-63/73 (- 63 over 73)
