Solve [(-3+7)*2-5*(-4+8)]*(4-9)=

$$[ ( - 3 + 7 ) \cdot 2 - 5 \cdot ( - 4 + 8 ) ] \cdot ( 4 - 9 ) =$$

Evaluate

$$60$$

Solution Steps

Add -3 and 7 to get 4.

$$\left(4\times 2-5\left(-4+8\right)\right)\left(4-9\right)$$

Multiply 4 and 2 to get 8.

$$\left(8-5\left(-4+8\right)\right)\left(4-9\right)$$

Add -4 and 8 to get 4.

$$\left(8-5\times 4\right)\left(4-9\right)$$

Multiply 5 and 4 to get 20.

$$\left(8-20\right)\left(4-9\right)$$

Subtract 20 from 8 to get -12.

$$-12\left(4-9\right)$$

Subtract 9 from 4 to get -5.

$$-12\left(-5\right)$$

Multiply -12 and -5 to get 60.

$$60$$

Factor

$$2^{2}\times 3\times 5$$