Evaluate
18
Factor
2\times 3^{2}
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20-\left(23-10\times 2+\frac{15}{3}-6\right)
Multiply 2 and 5 to get 10.
20-\left(23-20+\frac{15}{3}-6\right)
Multiply 10 and 2 to get 20.
20-\left(3+\frac{15}{3}-6\right)
Subtract 20 from 23 to get 3.
20-\left(3+5-6\right)
Divide 15 by 3 to get 5.
20-\left(8-6\right)
Add 3 and 5 to get 8.
20-2
Subtract 6 from 8 to get 2.
18
Subtract 2 from 20 to get 18.
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Limits
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