Question

Excerase : 1.1
Ques: 1 Simplify
(a) 4/7+2/21+1/3
لی)​

Answer 1

Answer:

$\frac{4}{7} + \frac{2}{21} + \frac{1}{3} = \frac{12 + 2 + 7}{21} = \frac{21}{21} = 1$

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Answer 2

Answer:

$\\ \longrightarrow\sf {\dfrac {4}{7} + \dfrac {2}{21} + \dfrac {1}{3}}$

Taking LCM of the denominators as 21 .

$\\ \longrightarrow\sf {\dfrac {4\times 3}{7\times 3} + \dfrac {2}{21} + \dfrac {1\times 7}{3\times 7}}$

$\\ \longrightarrow\sf {\dfrac {12}{21} + \dfrac {2}{21} + \dfrac {7}{21}}$

$\\ \longrightarrow\sf {\dfrac {12 + 2 + 7}{21}}$

$\\ \longrightarrow\sf {\dfrac {14 + 7}{21}}$

$\\ \longrightarrow\sf {\dfrac {21}{21}}$

$\\ \longrightarrow\sf {1}$

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