Solve 8+1-6--5+4+15-left(11-7-3-2right)2+-9

$$8+1-6--5+4+15- \left( 11-7-3-2 \right) 2+-9$$

Evaluate

$$20$$

Solution Steps

Add 8 and 1 to get 9.

$$9-6-\left(-5\right)+4+15-\left(11-7-3-2\right)\times 2-9$$

Subtract 6 from 9 to get 3.

$$3-\left(-5\right)+4+15-\left(11-7-3-2\right)\times 2-9$$

The opposite of -5 is 5.

$$3+5+4+15-\left(11-7-3-2\right)\times 2-9$$

Add 3 and 5 to get 8.

$$8+4+15-\left(11-7-3-2\right)\times 2-9$$

Add 8 and 4 to get 12.

$$12+15-\left(11-7-3-2\right)\times 2-9$$

Add 12 and 15 to get 27.

$$27-\left(11-7-3-2\right)\times 2-9$$

Subtract 7 from 11 to get 4.

$$27-\left(4-3-2\right)\times 2-9$$

Subtract 3 from 4 to get 1.

$$27-\left(1-2\right)\times 2-9$$

Subtract 2 from 1 to get -1.

$$27-\left(-2\right)-9$$

The opposite of -2 is 2.

$$27+2-9$$

Add 27 and 2 to get 29.

$$29-9$$

Subtract 9 from 29 to get 20.

$$20$$

Factor

$$2^{2}\times 5$$