Solve (-81+58-27-57)-(-49+38-21)-(-25+72-36)=

$$( - 81 + 58 - 27 - 57 ) - ( - 49 + 38 - 21 ) - ( - 25 + 72 - 36 ) =$$

Evaluate

$$-86$$

Solution Steps

Add -81 and 58 to get -23.

$$-23-27-57-\left(-49+38-21\right)-\left(-25+72-36\right)$$

Subtract 27 from -23 to get -50.

$$-50-57-\left(-49+38-21\right)-\left(-25+72-36\right)$$

Subtract 57 from -50 to get -107.

$$-107-\left(-49+38-21\right)-\left(-25+72-36\right)$$

Add -49 and 38 to get -11.

$$-107-\left(-11-21\right)-\left(-25+72-36\right)$$

Subtract 21 from -11 to get -32.

$$-107-\left(-32\right)-\left(-25+72-36\right)$$

The opposite of -32 is 32.

$$-107+32-\left(-25+72-36\right)$$

Add -107 and 32 to get -75.

$$-75-\left(-25+72-36\right)$$

Add -25 and 72 to get 47.

$$-75-\left(47-36\right)$$

Subtract 36 from 47 to get 11.

$$-75-11$$

Subtract 11 from -75 to get -86.

$$-86$$

Factor

$$-86$$