Solve 121/4-7/8

$$12 \frac{ 1 }{ 4 } - \frac{ 7 }{ 8 }$$

Evaluate

$$\frac{91}{8}=11.375$$

Solution Steps

Multiply 12 and 4 to get 48.

$$\frac{48+1}{4}-\frac{7}{8}$$

Add 48 and 1 to get 49.

$$\frac{49}{4}-\frac{7}{8}$$

Least common multiple of 4 and 8 is 8. Convert \frac{49}{4} and \frac{7}{8} to fractions with denominator 8.

$$\frac{98}{8}-\frac{7}{8}$$

Since \frac{98}{8} and \frac{7}{8} have the same denominator, subtract them by subtracting their numerators.

$$\frac{98-7}{8}$$

Subtract 7 from 98 to get 91.

$$\frac{91}{8}$$

Factor

$$\frac{7 \cdot 13}{2 ^ {3}} = 11\frac{3}{8} = 11.375$$