Question

How do you simplify `2a + b - 3b`?

Answer 1

`2a + b - 3b = 2a - 2b`

In `2a + b - 3b`, find similar variables in the expression. In `2a + b - 3b`, `b` and `-3b` have the same variable of `'b'` while `2a` does not share the same variable of `'a'` with any other values.

We now can subtract the values with the same variable.

`b-3b = -2b`

Hence the simplified answer would be `2a-2b`.