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

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Answer 1 · 2017-02-20T05:11:40

$z = 180$ $z = 180$

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

$z - (- 797)$ $z - (-797)$

into

$z + 797$ $z + 797$

The equation at this point is

$z + 797 = 977$ $z + 797 = 977$

You subtract $797$ $797$ 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

$z = 180$

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