Answer:

Just as you add, subtract, multiply, and divide when working with whole numbers, you also use these operations when working with fractions. There are many times when it is necessary to multiply fractions and mixed numbers.

Step-by-step explanation:

example 1

213×7213×7

Solution

Step 1:

First, we write the mixed number 213213 as an improper fraction and rewrite whole number 7 as fraction 7171.

213=(2×3+1)3=73213=(2×3+1)3=73; 7=717=71

Step 2:

213×7=73×71213×7=73×71

Step 3:

Multiplying numerators and denominators

73×71=(7×7)(3×1)=49373×71=(7×7)(3×1)=493

Step 4:

493493 can be written as a mixed number as follows

493=1613493=1613

Step 5:

So, 213×7=1613