Evaluate
-54
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-54
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-8-25-\left(-1+20-\left(19-21\right)\right)
Subtract 16 from 8 to get -8.
-33-\left(-1+20-\left(19-21\right)\right)
Subtract 25 from -8 to get -33.
-33-\left(19-\left(19-21\right)\right)
Add -1 and 20 to get 19.
-33-\left(19-\left(-2\right)\right)
Subtract 21 from 19 to get -2.
-33-\left(19+2\right)
The opposite of -2 is 2.
-33-21
Add 19 and 2 to get 21.
-54
Subtract 21 from -33 to get -54.
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