What is -2\times (-1)^3+3/(-1) ?

The solution to -2\times (-1)^3+3/(-1) is -1

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-2\times (-1)^3+3/(-1)

- 2 \cdot (- 1)^{3} + \frac{3}{- 1}

- 1

Solution steps

- 2 (- 1)^{3} + \frac{3}{- 1}

Simplify

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

Apply the fraction rule:

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

= - \frac{3}{1}

Apply rule

\frac{a}{1} = a

= - 3

= - 2 (- 1)^{3} - 3

Follow the PEMDAS order of operations

Calculate exponents

(- 1)^{3} : - 1

(- 1)^{3}

Apply exponent rule:

(- a)^{n} = - a^{n},

n

is odd

(- 1)^{3} = - 1^{3} = - 1

= - 1

= - 2 (- 1) - 3

Multiply and divide (left to right)

- 2 (- 1) : 2

- 2 (- 1)

Apply rule

- a \cdot (- b) = a \cdot b

- 2 (- 1) = 2 \cdot 1 = 2

= 2

= 2 - 3

Add and subtract (left to right)

2 - 3 : - 1

2 - 3

2 - 3 = - 1

= - 1

= - 1

15 - 2 - 20 \times 5

19 - 15 + 3 \times 1^{5}

- {- [(+ 4 - 5 + 8 + 6)] - 4}

(2 - 5)^{2} + (9 - 10 \div 5)

- 4 + 3^{3} \div 5