How to pronounce “linear equation” in English

It took a year to do with very simple linear equation.

Now, we can substitute those matrices back into Dirac's linear equation, then rewrite the three momenta and alpha coefficients as vectors.

So, you know, the linear equation, the quadratic equations, which I didn't know then.

First, he rewrote the relativistic energy momentum relationship like this, which is a linear equation.

I would even say, I think the way to say this is the equation for doing good work is not a simple linear equation.