Question

6 целых 1/6 минус 3 целых 11/21
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Answer 1

ответ: 2 9/14.

Пошаговое объяснение:

6 1/6 - 3 11/21 = 6 21/126 - 3 66/126 = 5 147/126 - 3 66/126 =

=2 81/126 =2 9/14.

Answer 2

$6 \frac{1}{6} - 3\frac{11}{21}$ = 37/14 = 2 $\frac{9}{14}$

Пошаговое объяснение:

$6 \frac{1}{6} - 3\frac{11}{21}$ =

$(6 - 3) + (\frac{1}{6} - \frac{11}{21} )\\$ =

$3 + (\frac{1*21}{6*21} - \frac{11*6}{21*6})$ =

$3 + (\frac{21}{126} - \frac{66}{126})$ =

$2 + (\frac{126}{126} + \frac{21}{126} - \frac{66}{126})$ =

$2 + \frac{81}{126} = 2 \frac{81}{126}$

$\frac{81:9}{126:9} = \frac{9}{14} =$

$2 \frac{81}{126} = 2\frac{9}{14}$