Answer: this is just algebra, so you just got to add 3 plus 12 and then add the X at the end cause you don't know it's value.
Step-by-step explanation:
In this case you are multiplying 3 times X so it would stay as 3 and just add 12 = 15 X
Hope I helped.
Answer:
hu
Step-by-step explanation:
hij
Answer:
192 cm³
Step-by-step explanation:
V = w · h · l
4 · 6 · 8
192 cm³