As my high school algebra teacher used to say, show your math, because if I don't know what steps you took, I don't know what steps you didn't take, and if I don't know what questions you asked, I don't know what questions you didn't ask.
就像高中代数老师曾对我说的， 给我看看你的解题步骤， 因为如果我不知道你的步骤， 我就不知道你落下了哪些步骤， 如果我不知道你问了些什么， 我就不知道哪些问题你没有问。