Solve 1-1/2+1/7

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

Evaluate

$$\frac{9}{14}\approx 0.642857143$$

Solution Steps

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

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

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

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

Subtract 1 from 2 to get 1.

$$\frac{1}{2}+\frac{1}{7}$$

Least common multiple of 2 and 7 is 14. Convert \frac{1}{2} and \frac{1}{7} to fractions with denominator 14.

$$\frac{7}{14}+\frac{2}{14}$$

Since \frac{7}{14} and \frac{2}{14} have the same denominator, add them by adding their numerators.

$$\frac{7+2}{14}$$

Add 7 and 2 to get 9.

$$\frac{9}{14}$$

Factor

$$\frac{3 ^ {2}}{2 \cdot 7} = 0.6428571428571429$$