LaTeX equations in sans-serif font

I write most of my text using a sans-serif font using the following code in my preamble:

Text looks than like this:

However, the equations are shown in a serif-font:

Although no big issue for me, I looked for a solution that produces my equations also in sans-serif format. There is a package for this called newtxsf that does exactly that:

Just add the package in your preamble: