Solve 1/87/8-1/2

$$\frac { 1 } { 8 } \frac { 7 } { 8 } - \frac { 1 } { 2 }$$

Evaluate

$$-\frac{25}{64}=-0.390625$$

Solution Steps

Multiply \frac{1}{8} times \frac{7}{8} by multiplying numerator times numerator and denominator times denominator.

$$\frac{1\times 7}{8\times 8}-\frac{1}{2}$$

Do the multiplications in the fraction \frac{1\times 7}{8\times 8}.

$$\frac{7}{64}-\frac{1}{2}$$

Least common multiple of 64 and 2 is 64. Convert \frac{7}{64} and \frac{1}{2} to fractions with denominator 64.

$$\frac{7}{64}-\frac{32}{64}$$

Since \frac{7}{64} and \frac{32}{64} have the same denominator, subtract them by subtracting their numerators.

$$\frac{7-32}{64}$$

Subtract 32 from 7 to get -25.

$$-\frac{25}{64}$$

Factor

$$-\frac{25}{64} = -0.390625$$