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

$2 a + b - 3 b = 2 a - 2 b$
In $2 a + b - 3 b$, find similar variables in the expression. In $2 a + b - 3 b$, $b$ and $- 3 b$ have the same variable of $' b '$ while $2 a$ does not share the same variable of $' a '$ with any other values.
$b - 3 b = - 2 b$
Hence the simplified answer would be $2 a - 2 b$.