Solve 3/5+1/4-3/10=

$$\frac { 3 } { 5 } + \frac { 1 } { 4 } - \frac { 3 } { 10 } =$$

Evaluate

$$\frac{11}{20}=0.55$$

Solution Steps

Least common multiple of 5 and 4 is 20. Convert \frac{3}{5} and \frac{1}{4} to fractions with denominator 20.

$$\frac{12}{20}+\frac{5}{20}-\frac{3}{10}$$

Since \frac{12}{20} and \frac{5}{20} have the same denominator, add them by adding their numerators.

$$\frac{12+5}{20}-\frac{3}{10}$$

Add 12 and 5 to get 17.

$$\frac{17}{20}-\frac{3}{10}$$

Least common multiple of 20 and 10 is 20. Convert \frac{17}{20} and \frac{3}{10} to fractions with denominator 20.

$$\frac{17}{20}-\frac{6}{20}$$

Since \frac{17}{20} and \frac{6}{20} have the same denominator, subtract them by subtracting their numerators.

$$\frac{17-6}{20}$$

Subtract 6 from 17 to get 11.

$$\frac{11}{20}$$

Factor

$$\frac{11}{2 ^ {2} \cdot 5} = 0.55$$