Answer:
12
Step-by-step explanation:
12 +30= 42
42+12=54
Answer:

if you don't its still right though
Step-by-step explanation:
only if you don't simplyfy if you do then just subtract and you will get a another answer which both are right
Answer:
The answer is -x+12/ x (x-2)
Step-by-step explanation:
Answer:
380cm
Step-by-step explanation:
i really hope thats right!