The solution to -1\div 2-1 is -3/2

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-1\div 2-1

Solution

- 1 \div 2 - 1

- \frac{3}{2}

Solution steps

- 1 \div 2 - 1

Follow the PEMDAS order of operations

Multiply and divide (left to right)

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

- 1 \div 2

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

= \frac{- 1}{2}

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

Add and subtract (left to right)

\frac{- 1}{2} - 1 : - \frac{3}{2}

\frac{- 1}{2} - 1

\frac{- 1}{2} - 1 = - \frac{3}{2}

\frac{- 1}{2} - 1

Apply the fraction rule:

\frac{- a}{b} = - \frac{a}{b}

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

Convert element to fraction:

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

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

Since the denominators are equal, combine the fractions:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

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

- 1 \cdot 2 - 1 = - 3

- 1 \cdot 2 - 1

Multiply the numbers:

1 \cdot 2 = 2

= - 2 - 1

Subtract the numbers:

- 2 - 1 = - 3

= - 3

= \frac{- 3}{2}

Apply the fraction rule:

\frac{- a}{b} = - \frac{a}{b}

= - \frac{3}{2}

= - \frac{3}{2}

= - \frac{3}{2}

5 2^{2} - 2 0^{2}

8 \div 3 + 6

5 (354 \cdot 12%)

(- 2) + (8) (- 2) (- 1)

1 \times (1 + 7) - 16 \div (1 + 3)