simplify each expression.
1. 6/2b - 1 minus 4/b - 1
2. n-6/2n + 2 plus 4n/3
3. 4/6x^3 - 12x^2 minus x - 3/6x^3 - 12x^2
please explain how to do these!! thanks
1. 6/2b - 1 minus 4/b - 1
2. n-6/2n + 2 plus 4n/3
3. 4/6x^3 - 12x^2 minus x - 3/6x^3 - 12x^2
please explain how to do these!! thanks