Final answer:
To solve the equation 6.2 + 0.4x = 8.05, subtract 6.2 from both sides and then divide both sides by 0.4 to solve for x. The solution is x = 4.625.
Step-by-step explanation:
To solve the equation 6.2 + 0.4x = 8.05, you need to isolate the variable x. Start by subtracting 6.2 from both sides of the equation to get rid of the constant term. This gives you 0.4x = 8.05 - 6.2. Simplify the right side to get 0.4x = 1.85. Next, divide both sides of the equation by 0.4 to solve for x. This gives you x = 1.85 ÷ 0.4 = 4.625. Therefore, the solution to the equation is x = 4.625.