What is 2-[-(7-2)+1]-4 ?

The solution to 2-[-(7-2)+1]-4 is 2

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2-[-(7-2)+1]-4

2 - [- (7 - 2) + 1] - 4

2

Solution steps

2 - [- (7 - 2) + 1] - 4

Follow the PEMDAS order of operations

Calculate within parentheses

[- (7 - 2) + 1] : - 4

- (7 - 2) + 1

Calculate within parentheses

(7 - 2) : 5

7 - 2

7 - 2 = 5

= 5

= - 5 + 1

Add and subtract (left to right)

- 5 + 1 : - 4

- 5 + 1

- 5 + 1 = - 4

= - 4

= - 4

= 2 - (- 4) - 4

Add and subtract (left to right)

2 - (- 4) - 4 : 2

2 - (- 4) - 4

Apply rule

- (- a) = + a

- (- 4) = + 4

= 2 + 4 - 4

2 + 4 = 6

= 6 - 4

6 - 4 = 2

= 2

= 2

1 0^{1} - 8

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(20 \times 3 - 51 + 6 + 12 + 3) \div 5 + 23