Final answer:
To solve the given equation, you subtract 2.2 from both sides, multiply by the reciprocal of 2/7, and calculate to find that x is approximately 15.05. However, this solution does not match any of the provided options.
Step-by-step explanation:
To solve for x in the equation 2.2 + 2/7x = 6.5, we can begin by isolating the x term on one side. Here's how we can do that:
- Subtract 2.2 from both sides of the equation: 2/7x = 6.5 - 2.2.
- This simplifies to: 2/7x = 4.3.
- To find x, multiply both sides by the reciprocal of 2/7, which is 7/2: x = 4.3 * (7/2).
- Calculate: x = 4.3 * 3.5.
- Finally, x = 15.05.
The closest answer from the options given is b) 17.5, but it's important to note that 15.05 is not one of the options provided. Therefore, it seems there might be an issue with the options listed for this problem.