Solve =4(-1/2)-7/2(-frac{1{2})-4}

$$= \frac { 4 ( - \frac { 1 } { 2 } ) - 7 } { 2 ( - \frac { 1 } { 2 } ) - 4 }$$

Evaluate

$$\frac{9}{5}=1.8$$

Solution Steps

Express 4\left(-\frac{1}{2}\right) as a single fraction.

$$\frac{\frac{4\left(-1\right)}{2}-7}{2\left(-\frac{1}{2}\right)-4}$$

Multiply 4 and -1 to get -4.

$$\frac{\frac{-4}{2}-7}{2\left(-\frac{1}{2}\right)-4}$$

Divide -4 by 2 to get -2.

$$\frac{-2-7}{2\left(-\frac{1}{2}\right)-4}$$

Subtract 7 from -2 to get -9.

$$\frac{-9}{2\left(-\frac{1}{2}\right)-4}$$

Cancel out 2 and 2.

$$\frac{-9}{-1-4}$$

Subtract 4 from -1 to get -5.

$$\frac{-9}{-5}$$

Fraction \frac{-9}{-5} can be simplified to \frac{9}{5} by removing the negative sign from both the numerator and the denominator.

$$\frac{9}{5}$$

Factor

$$\frac{3 ^ {2}}{5} = 1\frac{4}{5} = 1.8$$