Question

Identify the mistake in the sum given below and write the correct answer with proper steps.
2/7 + 1/3 = 2/21 + 1/21 =3/21
Write with steps and calculation

Answer 1

2 + 5 = 12 (how? add previous sum to 2+5) ... Why not add the missing step 4 + 7 = 32 which leads to 45 as the answer ... Related Questions (More Answers Below) ... 3+6=3*6+3=21.

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Answer 2

the mistake is in the first sum 2/7 + 1/3

we can make this first equation proper by subtracting 16)21 from the sum

Step-by-step explanation:

$the \: equation \: is \: \\ \frac{2}{7} + \frac{1}{3} = \frac{2}{21} + \frac{1}{21} = \frac{3}{21} \\ \frac{13}{21} = \frac{3}{21} = \frac{3}{21} \\ so \: if \: we \: subtract \: x \: from \: \frac{13}{21} \\ we \: will \: get \: \frac{3}{21} \\ \frac{13}{21} - x = \frac{3}{21} \\ x = \frac{13}{21} + \frac{3}{21} \\ x = \frac{16}{21} \\ hence \: \\ \frac{16}{21} - \frac{13}{21} = \frac{3}{21} = \frac{3}{21} \\ \frac{3}{21} = \frac{3}{21} = \frac{3}{21} \\ or \: \\ \frac{1}{7} = \frac{1}{7} = \frac{1}{7}$

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