Answer:
[tex]\boxed{\sf{x=12}}[/tex]
Step-by-step explanation:
Isolate the term of a from one side of the equation.
Solution: Multiplication property of equation.
a/40=3/10
First, multiply by 10 from both sides.
[tex]\sf{\dfrac{a}{40}\cdot \:10=\dfrac{3}{10}\cdot \:10}[/tex]
Solve.
a/4=3
Then, multiply by 4 from both sides.
4a/4=3*4
Solve.
3*4=12
a=12
As a result, the correct answer is a=12.
I hope this helps you! Let me know if my answer is wrong or not.
