Решите пропорцию: 1 19/20: (x+4) = 2 1/6:2 2/9

Question

Дарвоз

1 июля, 02:37

+5

Ответы (2)

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Келестина · Answer 1

2 1/6 * (х+4) = 2 2/9*19/20

13/6 х+26/3=20/9*19/20

13/6 х=19/9-26/3

13/6 х=19/9-78/9

13/6 х=-59/9

Х=-59/9:13/6=-59/9*6/13

Х=-118/39=-3 1/39

Арио · Answer 2

2 1/6 * (х+4) = 2 2/9*19/20

13/6 х+26/3=20/9*19/20

13/6 х=19/9-26/3

13/6 х=19/9-78/9

13/6 х=-59/9

Х=-59/9:13/6=-59/9*6/13

Х=-118/39=-3 1/39