Unlike fractions are those fractions where denominators are different

Eg: 1/2, 1/3, 1/5, 1/8

We use two methods to solve this

Subtract 1/2 & 1/5

1/2 − 1/5

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1. Chapter 2 Class 7 Fractions and Decimals
2. Concept wise
3. Addition and Subtraction of Fractions

Transcript

Adding & Subtracting Unlike FractionsUnlike fractions are those fractions where denominators are different Eg: 1/2, 1/3, 1/5, 1/8 Add ๐/๐ & ๐/๐ We use two methods to solve this Method 1 1/2 + 1/3 = (1 ร 3 + 1 ร 2)/(2 ร 3) = (3 + 2)/6 = 5/6 Method 2 1/2 + 1/3 First, we make denominators same. Common denominator. = LCM of 2 & 3 = 2 ร 6 = 6 โด 1/2 = 1/3 Thus, 1/2 + 1/3 = 3/6 + 2/6 = (3 + 2)/6 = ๐/๐ Subtract ๐/๐ & ๐/๐ 1/2 โ 1/5 Method 1 1/2 โ 1/5 = (1 ร 5 โ 1 ร 2)/(2 ร 5) = (5 โ 2)/6 = ๐/๐๐ Method 2 1/2 โ 1/5 Making denominators same. Common denominator. = LCM of 2 & 5 = 2 ร 5 = 10 โด 1/2 1/5 Thus, 1/2 โ 1/5 = 5/10 โ 2/10 = (5 โ 2)/10 = ๐/๐๐