Solve 3.5-1.25div2

$$3.5-1.25 \div 2$$

Evaluate

$$2.875$$

Solution Steps

Expand \frac{1.25}{2} by multiplying both numerator and the denominator by 100.

$$3.5-\frac{125}{200}$$

Reduce the fraction \frac{125}{200} to lowest terms by extracting and canceling out 25.

$$3.5-\frac{5}{8}$$

Convert decimal number 3.5 to fraction \frac{35}{10}. Reduce the fraction \frac{35}{10} to lowest terms by extracting and canceling out 5.

$$\frac{7}{2}-\frac{5}{8}$$

Least common multiple of 2 and 8 is 8. Convert \frac{7}{2} and \frac{5}{8} to fractions with denominator 8.

$$\frac{28}{8}-\frac{5}{8}$$

Since \frac{28}{8} and \frac{5}{8} have the same denominator, subtract them by subtracting their numerators.

$$\frac{28-5}{8}$$

Subtract 5 from 28 to get 23.

$$\frac{23}{8}$$

Factor

$$\frac{23}{2 ^ {3}} = 2\frac{7}{8} = 2.875$$