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

благодарю)

3/4:1/2 = 3/4×2/1 = 6/4 = 3/2 = 1.54/7:4/5 = 4/7×5/4 = 20/28 = 5/718/19:9 = 18/19×9/1 = 162/19 = 8 10/1911:22/31 = 11/1×31/22 = 341/22 = 15 11/22 = 15 1/2 = 15.511 2/5 : 3 4/5 = 57/5:19/5 = 57/5×5/19 = 285/95 = 31 9/11 : 2 4/33 = 20/11:70/33 = 20/11×33/70 = 60/70 = 6/75/9x = 2 1/3x = 2 1/3 : 5/9 = 7/3:5/9 = 7/3×9/5 = 63/15х = 4 3/15 = 4 1/5 = 4.2х = 4.214/39×х = 21/52х = 21/52:14/39 = 21/52×39/14 = 3/52×39/2 = 117/104 = 1.125х = 1.125