Math Help

by definition (see Formulary: Basic Identities) a/b=a*(1/b) .
for a=(43.8-45)=-1.2 and b=3.82/sqrt(63)=3.82/7.937253933193772=0.481274762298415989 =>
=> a/b=-1.2*(1/0.481274762298415989)=-2.493378198909038323563 hence
(43.8-45)/3.82/(sqrt63)=-2.493378198909038323563

But the Rules of Precedence (a universal convention) tell us to apply operations in the following order:
"When two operations with the same precedence occur together, they are performed from left to right, i.e. in the order that they are read."

In your expression we have two divisions.

So (43.8-45)/3.82/(sqrt63)=((43.8-45)/3.82)/(sqrt63)=-0.314136/7.937253933193772=-0.03957743 hence
the correct answer according to the rules of precedence must be
(43.8-45)/3.82/(sqrt63)=-0.03957743