Solve -7left(3+4left(5-10-3right)-5left(8-4-5right)right)-21

$$-7 \left( 3+4 \left( 5-10-3 \right) -5 \left( 8-4-5 \right) \right) -21$$

Evaluate

$$147$$

Solution Steps

Subtract 10 from 5 to get -5.

$$-7\left(3+4\left(-5-3\right)-5\left(8-4-5\right)\right)-21$$

Subtract 3 from -5 to get -8.

$$-7\left(3+4\left(-8\right)-5\left(8-4-5\right)\right)-21$$

Multiply 4 and -8 to get -32.

$$-7\left(3-32-5\left(8-4-5\right)\right)-21$$

Subtract 32 from 3 to get -29.

$$-7\left(-29-5\left(8-4-5\right)\right)-21$$

Subtract 4 from 8 to get 4.

$$-7\left(-29-5\left(4-5\right)\right)-21$$

Subtract 5 from 4 to get -1.

$$-7\left(-29-5\left(-1\right)\right)-21$$

Multiply 5 and -1 to get -5.

$$-7\left(-29-\left(-5\right)\right)-21$$

The opposite of -5 is 5.

$$-7\left(-29+5\right)-21$$

Add -29 and 5 to get -24.

$$-7\left(-24\right)-21$$

Multiply -7 and -24 to get 168.

$$168-21$$

Subtract 21 from 168 to get 147.

$$147$$

Factor

$$3\times 7^{2}$$