Evaluate
-38
Factor
-38
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1-\left(8+15-\left(4-20\right)\right)
Subtract 2 from 6 to get 4.
1-\left(8+15-\left(-16\right)\right)
Subtract 20 from 4 to get -16.
1-\left(8+15+16\right)
The opposite of -16 is 16.
1-\left(8+31\right)
Add 15 and 16 to get 31.
1-39
Add 8 and 31 to get 39.
-38
Subtract 39 from 1 to get -38.
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