What does it mean when a number is in () will mark brainliest

Well it depends

Step-by-step explanation:

If its an equation like this:

8³-3·9÷(6x4)

It means to do it like this

8³ (512) minus 27 (3x9) divided by 24 (6x4)

In accounting it usually means a negative number, but not always

If its right next to another number, it means to multiply them (in math)

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.