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\frac{48}{2}-\left(3\times 8-\left(4+2\right)+4\right)
Multiply 12 and 4 to get 48.
24-\left(3\times 8-\left(4+2\right)+4\right)
Divide 48 by 2 to get 24.
24-\left(24-\left(4+2\right)+4\right)
Multiply 3 and 8 to get 24.
24-\left(24-6+4\right)
Add 4 and 2 to get 6.
24-\left(18+4\right)
Subtract 6 from 24 to get 18.
24-22
Add 18 and 4 to get 22.
2
Subtract 22 from 24 to get 2.
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