Question

write the value of 7/9+1/3
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Answer 1

Answer:

10/9

Step-by-step explanation:

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Answer 2

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Solution:

⟹ While solving such fractions try to make the denominator same lcm ( lowest common multiple method) or else do cross multiplication method

Lowest Common Multiple Method:

We can make denominator same by lcm method. When we check in 9 and 3 multiplication table we see the lowest multiple is 9.

In 7/9, denominator is 9

In 1/3, denominator is 3

For 9 and 3 lowest common multiple(lcm) is 9

$9 = 9 \times 1$

$3 = 3 \times 3$

$\\ \frac{7 \times1 + 1 \times 3 }{9} \\ \\ = \frac{7 +3 }{9} \\ \\ = \frac {10}{9}$

Knowledge Booster :

⟹ While solving, fraction we have to keep lowest common multiple as common denominator and multiply the numerator with the number we get our lcm

⟹ For example: Take above question, the earlier denominator were 9 and 3, so when we got lcm as 9 we multiplied 1 and 3 with the respective numerator to make it perfect equation

⟹ Try to solve more such fraction type questions using lcm technique

⟹ We can also solve it by cross multiplication when we find it difficult to solve it by lcm

⟹ Cross multiplication is another method so try on it too

Another Method: Cross Multiplication

$\\ \\ \frac{7}{9} + \frac{1}{3} \\ \\ = \frac{7 \times 3 + 1 \times 9}{9 \times 3} \\ \\ = \frac{21 + 9}{27}$

$\\ \\ = \dfrac{30}{27} \\ \\ = \frac{10}{9}$

Extra information :

⟹ Keep good hold on calculation while solving cross multiplication so you can score well