1) x=2/3x+1. 2) x-1/2=3/4x. 3) x-2/3=5/6x. 4) 1/4/5 y=y+4. 5) 2/3y-1/3=5/9y. 6) 3/4y-2/3=7/12y

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Апалоша

Математика

5 июля, 23:26

1) x=2/3x+1. 2) x-1/2=3/4x. 3) x-2/3=5/6x. 4) 1/4/5 y=y+4. 5) 2/3y-1/3=5/9y. 6) 3/4y-2/3=7/12y

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Таисия Парфенова · Answer 1

1) x = 2/3x + 1;

x - 2/3x = 1;

1x - 2/3x = 1;

3/3x - 2/3x = 1;

(3/3 - 2/3) * x = 1;

1/3x = 1;

x = 1 : 1/3;

x = 1/1 * 3/1;

x = 3;

2) x - 1/2 = 3/4x;

x - 3/4x = 1/2;

4/4x - 3/4x = 1/2;

1/4x = 1/2;

x = 1/2 : 1/4;

x = 1/2 * 4/1;

x = 2;

3) x - 2/3 = 5/6x;

x - 5/6x = 2/3;

6/6x - 5/6x = 2/3;

1/6x = 2/3;

x = 2/3 : 1/6;

x = 2/3 * 6/1;

x = 4;

4) 1 4/5y = y + 4;

1 4/5 у - у = 4;

4/5 у = 4;

у = 4 : 4/5;

у = 4/1 * 5/4;

у = 5;

5) 2/3y - 1/3 = 5/9y;

2/3 у - 5/9 у = 1/3;

6/9 у - 5/9 у = 1/3;

1/9 у = 1/3;

у = 1/3 : 1/9;

у = 1/3 * 9/1;

у = 3;

6) 3/4y - 2/3 = 7/12y;

3/4 у - 7/12 у = 2/3;

9/12 у - 7/12 у = 2/3;

2/12 у = 2/3 : 2/12;

у = 2/3 * 12/2;

у = 4.