Evaluate
38
Factor
2\times 19
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20+10+9+8+7-9-7
Add 10 and 10 to get 20.
30+9+8+7-9-7
Add 20 and 10 to get 30.
39+8+7-9-7
Add 30 and 9 to get 39.
47+7-9-7
Add 39 and 8 to get 47.
54-9-7
Add 47 and 7 to get 54.
45-7
Subtract 9 from 54 to get 45.
38
Subtract 7 from 45 to get 38.
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