(3X + 10x) •8 = 312

To solve the equation, we can start by distributing the 8 to each term inside the parentheses:

8 * 3X + 8 * 10X = 312

Simplifying further:

24X + 80X = 312

Combining like terms:

104X = 312

Next, divide both sides of the equation by 104 to isolate the variable X:

104X / 104 = 312 / 104

X = 3

Therefore, the solution to the equation is X = 3.