Greetings Math whizzes......

I managed to get through basic algebra 30 years ago and enough to pass a recent upgrade for my Practical nursing program. Heading into Pharmacology and it requires remembering how to find the value of X in a fraction or equation, +,-,*,/ fractions and finding percentages and ratios. Math is a gift that is not mine.
Does anyone know of anagrams or acronyms that might help me remember which step goes where? (invert, cross-multiply, divide, etc)