решите уравнение 1) 2х/36=5/6; 2) 4/9=3х/ 54; 3) 7/21=3х/54; 4)11/33=2/3х; 5)8/5=4х/15;

1) 2х/36=5/6;

х = 5/6 / 2/36;

х = 5/6 * 36/2 = 180/12 = 15;

х = 15;

2) 4/9=3х/ 54;

х = 4/9 / 3/54;

х = 4/9 * 54/3 = 216/27 = 8;

х = 8;

3) 7/21=3х/54;

х = 7/21 / 3/54;

х = 7/21 * 54/3 = 378/63 = 6;

х = 6;

4) 11/33=2/3х;

1/3 = 2/3х;

х = 1/3 / 2/3;

х = 1/3 * 3/2 = 3/6 = 1/2 = 0,5;

х = 1/2 = 0,5;

5) 8/5=4х/15;

х = 8/5 / 4/15;

х = 8/5 * 15/4 = 120/20 = 6;

х = 6;

6) 9/16=3х/64;

х = 9/16 / 3/64;

х = 9/16 * 64/3 = 576/48 = 12;

х = 12;