Solve 1-1/2-3

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

Evaluate

$$-\frac{5}{2}=-2.5$$

Solution Steps

Convert 1 to fraction \frac{2}{2}.

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

Since \frac{2}{2} and \frac{1}{2} have the same denominator, subtract them by subtracting their numerators.

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

Subtract 1 from 2 to get 1.

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

Convert 3 to fraction \frac{6}{2}.

$$\frac{1}{2}-\frac{6}{2}$$

Since \frac{1}{2} and \frac{6}{2} have the same denominator, subtract them by subtracting their numerators.

$$\frac{1-6}{2}$$

Subtract 6 from 1 to get -5.

$$-\frac{5}{2}$$

Factor

$$-\frac{5}{2} = -2\frac{1}{2} = -2.5$$