Solve 9*10-5*4*2-36div12*2*5+52div4-21div7

$$9 \times 10-5 \times 4 \times 2-36 \div 12 \times 2 \times 5+52 \div 4-21 \div 7$$

Evaluate

$$30$$

Solution Steps

Multiply 9 and 10 to get 90.

$$90-5\times 4\times 2-\frac{36}{12}\times 2\times 5+\frac{52}{4}-\frac{21}{7}$$

Multiply 5 and 4 to get 20.

$$90-20\times 2-\frac{36}{12}\times 2\times 5+\frac{52}{4}-\frac{21}{7}$$

Multiply 20 and 2 to get 40.

$$90-40-\frac{36}{12}\times 2\times 5+\frac{52}{4}-\frac{21}{7}$$

Subtract 40 from 90 to get 50.

$$50-\frac{36}{12}\times 2\times 5+\frac{52}{4}-\frac{21}{7}$$

Divide 36 by 12 to get 3.

$$50-3\times 2\times 5+\frac{52}{4}-\frac{21}{7}$$

Multiply 3 and 2 to get 6.

$$50-6\times 5+\frac{52}{4}-\frac{21}{7}$$

Multiply 6 and 5 to get 30.

$$50-30+\frac{52}{4}-\frac{21}{7}$$

Subtract 30 from 50 to get 20.

$$20+\frac{52}{4}-\frac{21}{7}$$

Divide 52 by 4 to get 13.

$$20+13-\frac{21}{7}$$

Add 20 and 13 to get 33.

$$33-\frac{21}{7}$$

Divide 21 by 7 to get 3.

$$33-3$$

Subtract 3 from 33 to get 30.

$$30$$

Factor

$$2\times 3\times 5$$