Solve {[(5*12-3^2)+(71-23)-2]+5}-12=

$$\{ [ ( 5 \cdot 12 - 3 ^ { 2 } ) + ( 71 - 23 ) - 2 ] + 5 \} - 12 =$$

Evaluate

$$90$$

Solution Steps

Multiply 5 and 12 to get 60.

$$60-3^{2}+71-23-2+5-12$$

Calculate 3 to the power of 2 and get 9.

$$60-9+71-23-2+5-12$$

Subtract 9 from 60 to get 51.

$$51+71-23-2+5-12$$

Add 51 and 71 to get 122.

$$122-23-2+5-12$$

Subtract 23 from 122 to get 99.

$$99-2+5-12$$

Subtract 2 from 99 to get 97.

$$97+5-12$$

Add 97 and 5 to get 102.

$$102-12$$

Subtract 12 from 102 to get 90.

$$90$$

Factor

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