Solve 7/10-12/7

$$\frac { 7 } { 10 } - 1 \frac { 2 } { 7 }$$

Evaluate

$$-\frac{41}{70}\approx -0.585714286$$

Solution Steps

Multiply 1 and 7 to get 7.

$$\frac{7}{10}-\frac{7+2}{7}$$

Add 7 and 2 to get 9.

$$\frac{7}{10}-\frac{9}{7}$$

Least common multiple of 10 and 7 is 70. Convert \frac{7}{10} and \frac{9}{7} to fractions with denominator 70.

$$\frac{49}{70}-\frac{90}{70}$$

Since \frac{49}{70} and \frac{90}{70} have the same denominator, subtract them by subtracting their numerators.

$$\frac{49-90}{70}$$

Subtract 90 from 49 to get -41.

$$-\frac{41}{70}$$

Factor

$$-\frac{41}{70} = -0.5857142857142857$$