All but one

I've got brilliant target grades and I know I'll achieve them because the majority of my subjects are essay based, I got an 9 (A*) in a business mock and I'm averaging a B in each subject but maths. I'm absolutely awful at it and even struggle to add and subtract three digit numbers. Problem is, I want to be a solicitor, my English Lit/Lan are predicted to be an 7/8 (A) which isn't my issue, but my issue is my maths grade. I just can't learn simple foundation level stuff and it's so frustrating? Is there any chance a University would look over my inevitable awful maths grade, because I won't pass in May and I certainly won't pass any re-sits. Any help would be appreciated, as I feel like I may need to give up on my dream occupation.