# How do you solve z- - 797= 977?

Feb 20, 2017

$z = 180$

#### Explanation:

So first you simplify the left-hand side of the equation by simplifying

$z - \left(- 797\right)$

into

$z + 797$

The equation at this point is

$z + 797 = 977$

You subtract $797$ on both sides and get

$z + \cancel{797} - \cancel{797} = 977 - 797$

The $+ 797 - 797$ cancels out so you are left with

$z = 977 - 797$

which gives you

$z = 180$