Question

How do you simplify `-(3-x)`?

Answer 1

`x-3`

Explanation:

Assuming we work in the field of real numbers, we may use the left distributive property of the real numbers, which states that
`AAa,b,c in RR, a(b=c)=ab+ac`

to get

`-(3-x)=-1(3)+(-1)(-x)`

`=-3+x`