a) To solve for x in the equation 3.8 + 6x = 8.6, we should first isolate the x-term.
In order to do this, we need to subtract 3.8 from both sides of the equation. This would give us:
6x = 8.6 - 3.8
Simplifying the right side of the equation, we get:
6x = 4.8
Now, to isolate x, we should divide both sides of the equation by 6:
x = 4.8 / 6
Solving the right side of the equation, we find that x equals to 0.8.
b) Considering the second question, if by asking "Is this equation" you mean to inquire if the equation is solvable, then the answer is affirmative.
As demonstrated in the previous step, we have successfully solved the equation with x = 0.8. Therefore, the equation is solvable.