Hi Shantaisha;
(56-32)-15
The way to describe this is that 56 and -32 are associating with each other in the parenthetical aspect of this expression.
Because nothing is being multiplied nor divided, we can change the association...
(56-15)-32
or
(-15-32)+56
Please note the fact that subtracting a positive number, is the same thing as adding a negative number;
+ and - is identical to - and +.
An associative principle cannot be applied to...
4(14-8)-15
The -15 cannot be moved into the parenthetical aspect of this expression.
Please note, I am using the term expression. It is NOT an equation because there is no resolution; =.