What is 9-[(-5)-(+7)] ?

The solution to 9-[(-5)-(+7)] is 21

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9-[(-5)-(+7)]

9 - [(- 5) - (+ 7)]

21

Solution steps

9 - [(- 5) - (7)]

Follow the PEMDAS order of operations

Calculate within parentheses

[(- 5) - (7)] : - 12

(- 5) - (7)

(- 5) - (7) = - 12

= - 12

= 9 - (- 12)

Add and subtract (left to right)

9 - (- 12) : 21

9 - (- 12)

Apply rule

- (- a) = + a

- (- 12) = + 12

= 9 + 12

9 + 12 = 21

= 21

= 21

5 + 2 \div (1 + (1 \div 2) \div (2 - 1 \div 4))

4^{2} - 6 (4) - 7

2 - 5 \times 2 + 3 \div 6

2 - \frac{3}{4} - \frac{7}{12}

(- 1) \cdot (- 2) \cdot (- 3)