TBH... I don't think u need that much mathematical knowledge.
McTaggart, D., Findlay, C. & Parkin, M., Economics 5th edition, Pearson Education Australia, 2007 = my micro and macro eco txtbook.
It has an appendix to chapter one that explains how to understand a linear equation >.>
Year 8 stuff.
As long as you can stumble through the compulsory core units that require maths, I don't think the emphasis is on maths *that* much in majors like Business Law, Management, Marketing, Asian Development and Transition, Human Resource Management, or... there's a new major that's done cross-faculty with IT... don't know much about that one tho.
It's easy to say "Oh, Commerce needs maths".
But BCom covers such a broad area of topics, and I don't think it's fair to say that they ALL involve maths.
I think u'll do fine in a BCom degree, so long as u're particularly careful about wot units, majors and minors u do.
And it's not like u and maths r totally incompatible - u did only miss out by a single point after all.