Answer:
54
Explanation:
you have to use the principal of BODMAS
12 + 23 x 2 + 3 - 7
12 + 46 + 3 - 7
61 - 7
54
Well, Steroids and fats are both lipids and are both hydrophobic because there both non polar. And Differences are that they serve different functions in the body becasion. Hope this helps a lot