Solve -4-12-((-13-20+8)-4)-(-21+16-(-15+3))

$$-4-12-((-13-20+8)-4)-(-21+16-(-15+3))$$

Evaluate

$$6$$

Solution Steps

Subtract 12 from -4 to get -16.

$$-16-\left(-13-20+8-4\right)-\left(-21+16-\left(-15+3\right)\right)$$

Subtract 20 from -13 to get -33.

$$-16-\left(-33+8-4\right)-\left(-21+16-\left(-15+3\right)\right)$$

Add -33 and 8 to get -25.

$$-16-\left(-25-4\right)-\left(-21+16-\left(-15+3\right)\right)$$

Subtract 4 from -25 to get -29.

$$-16-\left(-29\right)-\left(-21+16-\left(-15+3\right)\right)$$

The opposite of -29 is 29.

$$-16+29-\left(-21+16-\left(-15+3\right)\right)$$

Add -16 and 29 to get 13.

$$13-\left(-21+16-\left(-15+3\right)\right)$$

Add -21 and 16 to get -5.

$$13-\left(-5-\left(-15+3\right)\right)$$

Add -15 and 3 to get -12.

$$13-\left(-5-\left(-12\right)\right)$$

The opposite of -12 is 12.

$$13-\left(-5+12\right)$$

Add -5 and 12 to get 7.

$$13-7$$

Subtract 7 from 13 to get 6.

$$6$$

Factor

$$2\times 3$$