Answer:

Step-by-step explanation:
Given the equation expressed as:

First, we need to calculate the value of "x" from the given expression.
Step 1: Given the equation 2x + 5 = 8x
Step 2: Subtract 5 from both sides:

Step 3: Subtract 8x from both sides

Step 4: Divide both sides by -6

Step 5: Get the value of 12x. Substitute x = 5/6 into the expression to have:

Therefore the value of 12x is 10