Solve 30%+80%-725

$$30 \% +80 \% -725$$

Evaluate

$$-\frac{7239}{10}=-723.9$$

Solution Steps

Reduce the fraction \frac{30}{100} to lowest terms by extracting and canceling out 10.

$$\frac{3}{10}+\frac{80}{100}-725$$

Reduce the fraction \frac{80}{100} to lowest terms by extracting and canceling out 20.

$$\frac{3}{10}+\frac{4}{5}-725$$

Least common multiple of 10 and 5 is 10. Convert \frac{3}{10} and \frac{4}{5} to fractions with denominator 10.

$$\frac{3}{10}+\frac{8}{10}-725$$

Since \frac{3}{10} and \frac{8}{10} have the same denominator, add them by adding their numerators.

$$\frac{3+8}{10}-725$$

Add 3 and 8 to get 11.

$$\frac{11}{10}-725$$

Convert 725 to fraction \frac{7250}{10}.

$$\frac{11}{10}-\frac{7250}{10}$$

Since \frac{11}{10} and \frac{7250}{10} have the same denominator, subtract them by subtracting their numerators.

$$\frac{11-7250}{10}$$

Subtract 7250 from 11 to get -7239.

$$-\frac{7239}{10}$$

Factor

$$-\frac{7239}{10} = -723\frac{9}{10} = -723.9$$