Solve is finding the correct solution to a logical problem after analysis. It implies that you understood the problem, and deal with it successfully. It is used for something that is not easy without taking complicated measures or thinking process.

Solve强调的是找到了解决问题的正确方案。解决的问题通常是抽象的逻辑问题。比如找到了解决一个数学难题的方法。

Solve

Fix is making a physical change to something, is used for something that takes concrete procedures. Although you can fix something, you may not understand the problem, you may just did something and the problem went away. You fixed it, but you don’t understand why.

You can fix a car, but you can't fix a mystery or a math problem.

If there is a body or concrete things that are broken, you fix it. You never solve it. You sometimes hear people say, "Can you fix me (up)?", but you don't hear "Can you solve me?"

Fix是指通过实实在在的动作处理实实在在的问题。需要注意的是，一个人能fix一个问题，不意味着这个人明白问题出现的原因。

Fix

Resolve means the end of a conflict or a problem. When you resolve something (a problem, an issue), you have completed it, it is done. Although it is done, it doesn’t mean you dealt with it correctly. Resolve only means you had concluded it with one way (of many possible choices).

"The issue has been resolved, although none of us is happy with the outcome."

Resolve typically concerns emotional problems.

"Resolve a dispute."

Resolve强调的是结束了一个事项，比如问题、分歧等。但也许解决问题的方案不那么好。

英语单词Solve, Resolve, Fix的区别