25 POINTS PLZ ANSWER!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:
The answer is 1st option
Step-by-step explanation:
You have to solve it :
0.3x = 12
(3/10)x = 12
(3/10)x ÷ (3/10) = 12 ÷ (3/10)
x = 12 × (10/3)
= 120/3
= 40
Answer:
Step-by-step explanation:
Simplifying
0.3x = 12
Solving
0.3x = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '0.3'.
x = 40
Simplifying
x = 40