What is -1/2 \times 2-1 ?

The solution to -1/2 \times 2-1 is -2

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-1/2 \times 2-1

- \frac{1}{2} \cdot 2 - 1

- 2

Solution steps

- \frac{1}{2} \cdot 2 - 1

Follow the PEMDAS order of operations

Multiply and divide (left to right)

- \frac{1}{2} \cdot 2 : - 1

- \frac{1}{2} \cdot 2

Convert element to fraction:

2 = \frac{2}{1}

= - \frac{1}{2} \cdot \frac{2}{1}

Cross-cancel common factor:

2

= - 1

= - 1 - 1

Add and subtract (left to right)

- 1 - 1 : - 2

- 1 - 1

- 1 - 1 = - 2

= - 2

= - 2

(1 - 3)^{2} - 2

- 2 (5)^{2}

1 \div \frac{1}{2} + \frac{1}{7}

2^{8} \times 15 + 2^{8}

(8 - 12) - (2 - 5)