Solve -8/7-3/-4

$$\frac { - 8 } { 7 } - \frac { 3 } { - 4 }$$

Evaluate

$$-\frac{11}{28}\approx -0.392857143$$

Solution Steps

Fraction \frac{-8}{7} can be rewritten as -\frac{8}{7} by extracting the negative sign.

$$-\frac{8}{7}-\frac{3}{-4}$$

Fraction \frac{3}{-4} can be rewritten as -\frac{3}{4} by extracting the negative sign.

$$-\frac{8}{7}-\left(-\frac{3}{4}\right)$$

The opposite of -\frac{3}{4} is \frac{3}{4}.

$$-\frac{8}{7}+\frac{3}{4}$$

Least common multiple of 7 and 4 is 28. Convert -\frac{8}{7} and \frac{3}{4} to fractions with denominator 28.

$$-\frac{32}{28}+\frac{21}{28}$$

Since -\frac{32}{28} and \frac{21}{28} have the same denominator, add them by adding their numerators.

$$\frac{-32+21}{28}$$

Add -32 and 21 to get -11.

$$-\frac{11}{28}$$

Factor

$$-\frac{11}{28} = -0.39285714285714285$$