Solve -51+3*{15-[6*(-3+8)-7*5]}

$$- 51 + 3 \cdot \{ 15 - [ 6 \cdot ( - 3 + 8 ) - 7 \cdot 5 ] \}$$

Evaluate

$$9$$

Solution Steps

Add -3 and 8 to get 5.

$$-51+3\left(15-\left(6\times 5-7\times 5\right)\right)$$

Multiply 6 and 5 to get 30.

$$-51+3\left(15-\left(30-7\times 5\right)\right)$$

Multiply 7 and 5 to get 35.

$$-51+3\left(15-\left(30-35\right)\right)$$

Subtract 35 from 30 to get -5.

$$-51+3\left(15-\left(-5\right)\right)$$

The opposite of -5 is 5.

$$-51+3\left(15+5\right)$$

Add 15 and 5 to get 20.

$$-51+3\times 20$$

Multiply 3 and 20 to get 60.

$$-51+60$$

Add -51 and 60 to get 9.

$$9$$

Factor

$$3^{2}$$