With this information:

J ^ ( J => M ) ^ ( M => H) => M ^ H

J: I have a job

M: I have money

H: I am happy

I need to do a truth table, to show that the argument is valid. Now, I completed the truth table, however I got a mix of T's and F's, which suggests the argument is not valid - thus why i am asking on here for help.

Basically, I would really apprechiate abit of help as to which order I should complete the colomns.

Thanks