Question

12\frac{7}{10} - 7\frac{2}{5} =

Explanation:

Step1: Convert mixed numbers to improper fractions or make denominators equal. Let's make the denominator of the second fraction's fractional part equal to 10.

$7\frac{2}{5} = 7\frac{2\times2}{5\times2}=7\frac{4}{10}$

Step2: Subtract the whole numbers and the fractional parts separately.

Whole numbers: $12 - 7 = 5$; Fractional parts: $\frac{7}{10}-\frac{4}{10}=\frac{3}{10}$

Step3: Combine the results.

$5+\frac{3}{10}=5\frac{3}{10}$

Answer:

$5\frac{3}{10}$