ВЫПОЛНИТЕ ДЕЙСТВИЕ 3/4:1/2 4/7:4/5 18/19:9
11:22/31 11 2/5 :3 4/5
1 9/11 : 2 4/33
РЕШИТЕ УРАВНЕНИЕ
5/9x=2 1/3 14/39:x=21/52

1/9x+7/18x-13/27x=1 5/6
ЗАРАНЕЕ СПАСИБО
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