Solve 1-1/4+3/5

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

Evaluate

$$\frac{27}{20}=1.35$$

Solution Steps

Convert 1 to fraction \frac{4}{4}.

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

Since \frac{4}{4} and \frac{1}{4} have the same denominator, subtract them by subtracting their numerators.

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

Subtract 1 from 4 to get 3.

$$\frac{3}{4}+\frac{3}{5}$$

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

$$\frac{15}{20}+\frac{12}{20}$$

Since \frac{15}{20} and \frac{12}{20} have the same denominator, add them by adding their numerators.

$$\frac{15+12}{20}$$

Add 15 and 12 to get 27.

$$\frac{27}{20}$$

Factor

$$\frac{3 ^ {3}}{2 ^ {2} \cdot 5} = 1\frac{7}{20} = 1.35$$