Question

1) 6 4/9 x =1
2) x: 8/25= 5/32
3) 3/5 y + 2 1/6 = 4 11/30
3) 3 4/7: Y-3 5/6=1/6
СРОЧНО

Answer 1

Ответ:

Пошаговое объяснение:

1) 6 4/9* x =1;

x = 1:(6 4/9);

x=1:(6*9+4)/9;

x = 9/58.

2) x: 8/25= 5/32;

x=5/32 * 8/25;

x=(5*8)/(32*25)

x=1/20.

3) 3/5 y + 2 1/6 = 4 11/30;

3/5y = 4 11/30-2 1/6 =>  НОК(30;6) = 30 =>

3/5y = 4 11/30 - 2 5/30;

3/5y = (4-2) (11-5)/30;

3/5y = 2 6/30;

3/5y = 2 1/5;

y=2 1/5 : (3/5);

y=11/5 * (5/3);

y=(11*5)/(5*3);

y=11/3 = 3 2/3.

4) (3 4/7): y - 3 5/6=1/6;

3 4/7: y = 1/6 + 3 5/6;

3 4/7: y = 3 6/6;

3 4/7: y = 4;

y=3 4/7 : 4;

y=(3*7+4)/7 * 1/4;

y=25/7 * 1/4;

y=25/28.