The ambiguity if one exists is an algebraic equation has been written in basic math format.
The algebraic equation should be:
__48__ = x ......Which results in x= 2
Sorry I do not have software to write algebra formulas. So I did the best I could.
_48_ (9+3) = x Which results in 288.
Complex algebra formulas are written as fractions not using ÷
Doing the method you just did, you're giving division precedence over multiplication, which it doesn't have. You perform division and multiplication left to right.
It should be
I changed to forward slash / for fraction or to denote division below.
a/b = c
a÷b= c when converted to algebraic expression is a/b= c
Division or the fraction in these equations is the primary action of the equation.
All secondary actions must be completed first.