Answer:
x = 3
Explanation:
Distributive property is multiplying. You really actually have to know it in every math course you'll ever take. So its worth learning.
To use distributive property here, take the outside 4 and bounce it into the parenthesis. To BOTH the 5x and also to the -3.
see image.
Then to finish solving, add 12 to both sides of the equation (the equal sign is in the middle). Then divide both sides by 20 to find the solution. See image.