Use of calc() inside fxFlex not working on edge

I’ve read that there’s no way Edge works with calc() inside of a fxFlex. How can I make it work? Is there any workaround?

I want to show two inputs at same line with a gap of 10px. On chrome it does work, but not on Edge.

<mat-form-field fxFlex="calc(50% - 10px)">

Source: New feed
Source Url Use of calc() inside fxFlex not working on edge