Solve (-4)*(-5)-9-2(2*7-3*5)

$$( - 4 ) \cdot ( - 5 ) - 9 - 2 ( 2 \cdot 7 - 3 \cdot 5 )$$

Evaluate

$$13$$

Solution Steps

Multiply -4 and -5 to get 20.

$$20-9-2\left(2\times 7-3\times 5\right)$$

Subtract 9 from 20 to get 11.

$$11-2\left(2\times 7-3\times 5\right)$$

Multiply 2 and 7 to get 14.

$$11-2\left(14-3\times 5\right)$$

Multiply 3 and 5 to get 15.

$$11-2\left(14-15\right)$$

Subtract 15 from 14 to get -1.

$$11-2\left(-1\right)$$

Multiply 2 and -1 to get -2.

$$11-\left(-2\right)$$

The opposite of -2 is 2.

$$11+2$$

Add 11 and 2 to get 13.

$$13$$

Factor

$$13$$