Hmmm ok thanks – have to admit I didn’t think it would apply an order to such a simple operation.
She is familiar with BIDMAS principles so will just let her know to follow that as normal.
From memory, Eng. maths was just stuff that came in useful later for more detailed engineering work – thermo/aero-dynamics, etc. Laplace & Z-transforms, matrices, fourier series, linear optimisations, stats, etc…
And is then forgetten within a year of starting work as everything is done in software packages instead! But at least you know the principles. In theory…