Give examples of when Macbeth equivocates in Shakespeare's play, Macbeth.

An href="http://dictionary.reference.com/browse/equivocator">equivocator is
someone who lies and tells half-truths, or says something ambiguous to mislead another.
In Shakespeare's play, Macbeth, the witches are generally
considered the "great" equivocators in the play in the play. (In the second set of
predictions they deliver in Act Four, they tell half-truths to trick Macbeth.) However,
we can see instances, also where Macbeth is no better than the witches for telling
lies.

The first instance where Macbeth
outright lies is when he says he killed Duncan's guards because he was so upset over
Duncan's murder at their hands. He actually kills them so they cannot raise doubts in
anyone's mind that they were "framed."

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MACBETH:

O,
yet I do repent me of my fury,

That I did kill them.
(II.iii.117-118)

He excuses
his behavior, wondering how anyone could be levelheaded in the face
of such horror: seeing his beloved King murdered.

Another
instance is when Macbeth speaks to Banquo, ostensibly to ask him if he will be gone long
when he goes riding—to remind him not to be late for dinner because Macbeth wants to
speak to him. Macbeth is actually making plans to have his friend murdered because
Banquo heard the witches' initial predictions that told Macbeth he would be king, and
Banquo has told Macbeth that he will not be swayed from what he
believes to be morally correct.

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MACBETH:

We
should have else desired your good advice,

Which still hath
been both grave and prosperous

In this day's council; but
we'll take tomorrow.

Is't far you ride?
(III.i.23-26)

Later in the
same scene, Macbeth meets with the men he has hired to murder Banquo. They are not
professional killers, but simply common men whose lives have taken a turn for the worse.
Macbeth has told the men that Banquo is to blame for their dire
circumstances—when they had originally thought it was Macbeth. (The truth is that it
was Macbeth who had beggared
them.)

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MACBETH:

...Know

That
it was he, in the times past, which held you

So under
fortune, which you thought had been

Our innocent
self?

...“Thus did Banquo.” (81-84;
89)

Macbeth goes on to ask
these men (much like his wife asked him with regard to Duncan) if
they are kind-hearted enough to ignore what Banquo has "done," or if they will
be man enough to do something about it.

Of
course, the men believe Macbeth (as most of his peers do at the beginning), never
expecting that this new King of Scotland is lying to them. He tells them that
he could kill Banquo easily himself, but that he doesn't want to
offend important men who are mutual friends to Macbeth and
Banquo.

Macbeth does all he can not only to take the throne
from Duncan, but to make sure it remains in his possession.