Solve (-2)+(20+1):3-[12*(3+1)-5*8]

$$( - 2 ) + ( 20 + 1 ) : 3 - [ 12 \cdot ( 3 + 1 ) - 5 \cdot 8 ]$$

Evaluate

$$-3$$

Solution Steps

Add 20 and 1 to get 21.

$$-2+\frac{21}{3}-\left(12\left(3+1\right)-5\times 8\right)$$

Divide 21 by 3 to get 7.

$$-2+7-\left(12\left(3+1\right)-5\times 8\right)$$

Add -2 and 7 to get 5.

$$5-\left(12\left(3+1\right)-5\times 8\right)$$

Add 3 and 1 to get 4.

$$5-\left(12\times 4-5\times 8\right)$$

Multiply 12 and 4 to get 48.

$$5-\left(48-5\times 8\right)$$

Multiply 5 and 8 to get 40.

$$5-\left(48-40\right)$$

Subtract 40 from 48 to get 8.

$$5-8$$

Subtract 8 from 5 to get -3.

$$-3$$

Factor

$$-3$$