Solve 1div1/2div(-1)*(-25)

$$1 \div \frac{ 1 }{ 2 } \div (-1) \times (-25)$$

Evaluate

$$50$$

Solution Steps

Express \frac{\frac{1}{\frac{1}{2}}}{-1} as a single fraction.

$$\frac{1}{\frac{1}{2}\left(-1\right)}\left(-25\right)$$

Multiply \frac{1}{2} and -1 to get -\frac{1}{2}.

$$\frac{1}{-\frac{1}{2}}\left(-25\right)$$

Divide 1 by -\frac{1}{2} by multiplying 1 by the reciprocal of -\frac{1}{2}.

$$1\left(-2\right)\left(-25\right)$$

Multiply 1 and -2 to get -2.

$$-2\left(-25\right)$$

Multiply -2 and -25 to get 50.

$$50$$

Factor

$$2\times 5^{2}$$