What is 15-[20-(16-8)-10] ?

The solution to 15-[20-(16-8)-10] is 13

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15-[20-(16-8)-10]

15 - [20 - (16 - 8) - 10]

13

Solution steps

15 - [20 - (16 - 8) - 10]

Follow the PEMDAS order of operations

Calculate within parentheses

[20 - (16 - 8) - 10] : 2

20 - (16 - 8) - 10

Calculate within parentheses

(16 - 8) : 8

16 - 8

16 - 8 = 8

= 8

= 20 - 8 - 10

Add and subtract (left to right)

20 - 8 - 10 : 2

20 - 8 - 10

20 - 8 = 12

= 12 - 10

12 - 10 = 2

= 2

= 2

= 15 - 2

Add and subtract (left to right)

15 - 2 : 13

15 - 2

15 - 2 = 13

= 13

= 13

(- 6)^{3} \div 3^{2} \div [- 9 - (- 8)]^{3}

5 \cdot 1 0^{3} + 6 \cdot 1 0^{2}

13 - 12 + 5 - 56

(\frac{1}{2} + \frac{1}{3}) \div \frac{1}{5}

288030 \div 13000 - 240000 \div 13000