# How do you subtract the polynomial (3.1x+2.8z) and (4.3x-1.2z)?

Jul 5, 2017

See a solution process below:

#### Explanation:

We can write this problem as the expression:

$\left(3.1 x + 2.8 z\right) - \left(4.3 x - 1.2 z\right)$

First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:

$3.1 x + 2.8 z - 4.3 x + 1.2 z$

Next, group like terms:

$3.1 x - 4.3 x + 2.8 z + 1.2 z$

Now, combine like terms:

$\left(3.1 - 4.3\right) x + \left(2.8 + 1.2\right) z$

$- 1.2 x + 4.0 z$