Question

How do you simplify `6+5x-(-3x)`?

Answer 1

`6+8x`

Explanation:

Consider `-(-3x)`

This is the same as:`" " (-1)xx(-1)xx(3x)`

But `" "(-1)xx(-1) = +1` giving

`(+1)xx(3x)=+3x`
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Given:`" "6+5x-(-3x)`

Write as: `" "6+5x+3x`

`= 6+8x`