Solve 3/8+1/4-1

$$\frac { 3 } { 8 } + \frac { 1 } { 4 } - 1$$

Evaluate

$$-\frac{3}{8}=-0.375$$

Solution Steps

Least common multiple of 8 and 4 is 8. Convert \frac{3}{8} and \frac{1}{4} to fractions with denominator 8.

$$\frac{3}{8}+\frac{2}{8}-1$$

Since \frac{3}{8} and \frac{2}{8} have the same denominator, add them by adding their numerators.

$$\frac{3+2}{8}-1$$

Add 3 and 2 to get 5.

$$\frac{5}{8}-1$$

Convert 1 to fraction \frac{8}{8}.

$$\frac{5}{8}-\frac{8}{8}$$

Since \frac{5}{8} and \frac{8}{8} have the same denominator, subtract them by subtracting their numerators.

$$\frac{5-8}{8}$$

Subtract 8 from 5 to get -3.

$$-\frac{3}{8}$$

Factor

$$-\frac{3}{8} = -0.375$$